Commit Graph

59555 Commits

Author SHA1 Message Date
Kubernetes Submit Queue
a6891528a7
Merge pull request #57233 from xiangpengzhao/kubeadm-support-version
Automatic merge from submit-queue (batch tested with PRs 57287, 57233, 57305). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Update kubeadm's minimum supported kubernetes to 1.9.

**What this PR does / why we need it**:
Update it in 1.10 cycle.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:
/cc @kubernetes/sig-cluster-lifecycle-pr-reviews

**Release note**:

```release-note
Update kubeadm's minimum supported Kubernetes version in v1.10.x to v1.9.0
```
2017-12-18 02:19:33 -08:00
Kubernetes Submit Queue
8c8175ee0a
Merge pull request #57287 from mattkelly/kubeadm-preflight-check-files-not-dir
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

kubeadm: Only check for well-known files in preflight

**What this PR does / why we need it**:
This makes the preflight checks less heavy-handed by specifically checking for well-known files (`kube-apiserver.yaml`, `kube-controller-manager.yaml`, `kube-scheduler.yaml`, `etcd.yaml`) in `/etc/kubernetes/manifests` instead of simply checking for a non-empty directory. 

**Which issue(s) this PR fixes**:
Fixes kubernetes/kubeadm#595

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2017-12-18 02:04:57 -08:00
linyouchong
5bc7e2212a fix accessmode mapping error 2017-12-18 17:51:38 +08:00
Konstantinos Tsakalozos
adf3c21495 Fix LB lint errors 2017-12-18 10:56:34 +02:00
Kubernetes Submit Queue
e0284fab0b
Merge pull request #56691 from sttts/sttts-fix-runtime-config-docs
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

kube-apiserver: fix runtime-config flag docs

This `apis/<GV>` syntax must predate API groups? It's not what we support today at least.
2017-12-18 00:29:29 -08:00
Cao Shufeng
0c9bb5a964 remove useless function hasHostPortConflicts
`hasHostPortConflicts` is not used anywhere. Delete it.
2017-12-18 16:14:26 +08:00
Kubernetes Submit Queue
0a55f4105c
Merge pull request #57278 from vikaschoudhary16/limit
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix device manager to scan resources.Requests

**What this PR does / why we need it**:
This PR makes device manager to scan resources.Requests from the container spec. Currently
it scans resources.Limits. For extended resources, it is not mandatory for resources.Limits to be present in the container spec and if Limits are present, validation logic ensures that Limits will always be equal to Requests. 

Fixes #57276 

**Special notes for your reviewer**:

**Release note**:

```release-note
None
```
/sig node

/cc @ConnorDoyle @vishh @jiayingz @RenaudWasTaken @tengqm @resouer @mindprince
2017-12-17 23:43:59 -08:00
xiangpengzhao
9c9ac106b8 Auto generated BUILD files. 2017-12-18 15:17:29 +08:00
xiangpengzhao
0de49c461f Remove kube-proxy 1.8 configmap and daemonset manifests in kubeadm. 2017-12-18 15:17:17 +08:00
pospispa
2e4c4b23ad PVC Protection Alpha Feature E2E Tests
PVC Protection alpha feature was introduced in PRs:
- https://github.com/kubernetes/kubernetes/pull/55824
- https://github.com/kubernetes/kubernetes/pull/55873

That's why E2E tests for this feature are added.
2017-12-18 07:37:07 +01:00
Di Xu
d474b86e05 Propagate error up instead panic 2017-12-18 14:05:06 +08:00
Zhenguo Niu
9b549bd5f4 Restrict url check conditions when creating with --raw 2017-12-18 13:42:58 +08:00
Kubernetes Submit Queue
d3a7347889
Merge pull request #56982 from tianshapjq/correct-annotations-container_manager.go
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

correct a comment in container_manager.go

I just found the annotations doesn't match the func and I correct it.
correct me if i'm wrong :)
2017-12-17 20:19:47 -08:00
vikaschoudhary16
bf1fb46347 Look for requested resources in the Requests 2017-12-17 22:56:45 -05:00
m1093782566
22a4edcd72 update bazel BUILD 2017-12-18 11:03:29 +08:00
m1093782566
8c4bfd0ca3 add fake ut 2017-12-18 11:03:22 +08:00
m1093782566
094eaf4249 test get node IP 2017-12-18 11:03:15 +08:00
m1093782566
1793e6eb18 add pkg/util/ipvs OWNERS file 2017-12-18 09:25:28 +08:00
tianshapjq
7a43f736c4 correct the annotations in container_manager.go 2017-12-18 09:01:36 +08:00
chshou
9c83e800fb reapplied the changes after merge 2017-12-17 11:27:13 -08:00
chshou
6b8ff76500 minor fixes 2017-12-17 11:26:30 -08:00
chshou
9f26becae1 get rg inside 'ensure' methods 2017-12-17 11:26:30 -08:00
chshou
03730a3e90 delete pip by matching name and rg 2017-12-17 11:26:30 -08:00
chshou
9054137d05 annotate service with resource group 2017-12-17 11:25:07 -08:00
chshou
540baa9796 Allow use resource ID to specify public IP address in azure_loadbalancer 2017-12-17 11:24:11 -08:00
Matt Kelly
41a4db7f48 kubeadm: Only check for well-known files in preflight 2017-12-17 13:41:15 -05:00
Kubernetes Submit Queue
6b03a43b76
Merge pull request #57214 from gnufied/remove-mutation-from-pvc-validation
Automatic merge from submit-queue (batch tested with PRs 55977, 56198, 57202, 57254, 57214). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Remove mutation from pvc validation

Remove mutation from pvc validation. pvc status is already being reset back in `PrepareForUpdate` function.

Fixes https://github.com/kubernetes/kubernetes/issues/56393

cc @kubernetes/sig-storage-bugs 

@liggitt @deads2k
2017-12-17 08:26:55 -08:00
Kubernetes Submit Queue
88704f3f2d
Merge pull request #57254 from Random-Liu/fix-e2e-test
Automatic merge from submit-queue (batch tested with PRs 55977, 56198, 57202, 57254, 57214). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix e2e test cleanup.

E2E test should use `AfterEach` instead of `AddCleanupAction`.
`CleanupAction` only runs once after all tests finish https://github.com/kubernetes/kubernetes/blob/master/test/e2e/e2e.go#L258.

I hit this issue very frequently that once `Aggregator` test fails, all following tests all fail because the cleanup function does not run after the test, and namespace controller stops working with full of errors:
```
unable to retrieve the complete list of server APIs: wardle.k8s.io/v1alpha1: the server could not find the requested resource
```

Examples:
* https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/logs/ci-cri-containerd-e2e-gci-gce/940
* https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/logs/ci-kubernetes-e2e-gci-gce/19115
* https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/logs/ci-kubernetes-e2e-gci-gce/18763
* https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/logs/ci-kubernetes-e2e-gci-gce/18751

Signed-off-by: Lantao Liu <lantaol@google.com>

**Release note**:

```release-note
none
```
2017-12-17 08:26:52 -08:00
Kubernetes Submit Queue
403a3fa10a
Merge pull request #57202 from php-coder/fix_vsphere_volume_describer
Automatic merge from submit-queue (batch tested with PRs 55977, 56198, 57202, 57254, 57214). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix format string in describers

**What this PR does / why we need it**:
This PR fixes bug in the Vsphere Volume Source and other describers.

Before this fix `kubectl describe` could show something like this:
```
Source:
	Type:       vSphereVolume (a Persistent Disk resource in vSphere)
	VolumePath:     StoragePolicyName:  %v

	FSType:                             volumes/PVDISK_001
%!(EXTRA string=ext4, string=)Events:   <none>
```
It happened because format string was accidentally split to 2 strings and was interpreted in a wrong way.

**Release note**:
```release-note
NONE
```

CC @simo5
2017-12-17 08:26:50 -08:00
Kubernetes Submit Queue
402456991f
Merge pull request #56198 from dixudx/remove_FilterFunc_use_SelectionPredicate
Automatic merge from submit-queue (batch tested with PRs 55977, 56198, 57202, 57254, 57214). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

remove FilterFunc and use SelectionPredicate everywhere

**What this PR does / why we need it**:
> // FilterFunc takes an API object and returns true if the object satisfies some requirements.
// TODO: We will remove this type and use SelectionPredicate everywhere.
type FilterFunc func(obj runtime.Object) bool

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:
/assign @liggitt @wojtek-t 
**Release note**:

```release-note
None
```
2017-12-17 08:26:48 -08:00
Kubernetes Submit Queue
f87853625b
Merge pull request #55977 from ConnorDoyle/cpu-manager-feature-gate-default-on
Automatic merge from submit-queue (batch tested with PRs 55977, 56198, 57202, 57254, 57214). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

CPU manager no-op policy is on by default.

**What this PR does / why we need it**:

- Turn on the CPUManager feature gate by default.
- Mark CPU manager feature as beta.

Fixes #52031

**Special notes for your reviewer**:

/hold

Do not merge until:
- [ ] gating e2e tests are enabled in CI

**Release note**:
```release-note
Graduate CPU Manager feature from alpha to beta.
```
2017-12-17 08:26:45 -08:00
Kubernetes Submit Queue
5f92042610
Merge pull request #56483 from dixudx/fix_cli_attach_format
Automatic merge from submit-queue (batch tested with PRs 57127, 57011, 56754, 56601, 56483). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

fix bad output format for attaching pods

**What this PR does / why we need it**:
If the user wants to attach stdin, wants a TTY, and `o.In` is a terminal, `t.Raw` is set to true, which is causing bad format like #56450.

We should avoid print extra logs in `SafeFunc`. Move it outer.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #56450

**Special notes for your reviewer**:
/assign @thockin @kubernetes/sig-cli-bugs  

**Release note**:

```release-note
None
```
2017-12-17 06:26:01 -08:00
Kubernetes Submit Queue
a2e02ab5b6
Merge pull request #56601 from anfernee/probe-test
Automatic merge from submit-queue (batch tested with PRs 57127, 57011, 56754, 56601, 56483). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Test probe for redirect endpoint

Make sure #18233 works

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #18233

**Special notes for your reviewer**:

**Release note**:
```release-note
None
```
2017-12-17 06:25:59 -08:00
Kubernetes Submit Queue
94327c5f72
Merge pull request #56754 from dims/remove-hacks-for-mesos
Automatic merge from submit-queue (batch tested with PRs 57127, 57011, 56754, 56601, 56483). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Remove hacks added for mesos

**What this PR does / why we need it**:

Since Mesos is no longer in your main repository and since we have
things like dynamic kubelet configuration in progress, we should
drop these undocumented, untested, private hooks.

cmd/kubelet/app/server.go::CreateAPIServerClientConfig
CreateAPIServerClientConfig::getRuntime
pkg/kubelet/kubelet_pods.go::getPhase

Also remove stuff from Dependencies struct that were specific to
the Mesos integration (ContainerRuntimeOptions and Options)

Also remove stale references in test/e2e and and test owners file


**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
Drop hacks used for Mesos integration that was already removed from main kubernetes repository
```
2017-12-17 06:25:56 -08:00
Kubernetes Submit Queue
8395775176
Merge pull request #57011 from m1093782566/kubenet-promisc
Automatic merge from submit-queue (batch tested with PRs 57127, 57011, 56754, 56601, 56483). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

check and set promiscuous mode with netlink because netlink already supports it

**What this PR does / why we need it**:

check and set promiscuous mode with netlink because netlink already supports it.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

I wanted to add tests for the changes, however I found upstream CI does not allow UT acquire root privilege :(

**Release note**:

```release-note
NONE
```

/sig network
2017-12-17 06:25:53 -08:00
Kubernetes Submit Queue
1f025dde30
Merge pull request #57127 from feiskyer/proxy-validation
Automatic merge from submit-queue (batch tested with PRs 57127, 57011, 56754, 56601, 56483). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Enhance proxy mode validation

**What this PR does / why we need it**:

Proxy modes are list multiple times in validateProxyModeWindows and validateProxyModeLinux. This PR enhances the validation logic and only list them once.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:

Refer https://github.com/kubernetes/kubernetes/pull/56529/files#r156448205.

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

/assign @thockin
2017-12-17 06:25:50 -08:00
Kubernetes Submit Queue
0d5f801753
Merge pull request #57218 from iloayuil/typo
Automatic merge from submit-queue (batch tested with PRs 56375, 56872, 57053, 57165, 57218). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

typo wrong, not "namespace", but "secretName"

namespace, _ := claims[NamespaceClaim].(string)
		if len(namespace) == 0 {
			return nil, false, errors.New("namespace claim is missing")
		}
		secretName, _ := claims[SecretNameClaim].(string)
		if len(namespace) == 0 {
			return nil, false, errors.New("secretName claim is missing")
		}



**What this PR does / why we need it**:

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2017-12-17 05:33:48 -08:00
Kubernetes Submit Queue
f9cf007213
Merge pull request #57165 from tallclair/admit-metrics
Automatic merge from submit-queue (batch tested with PRs 56375, 56872, 57053, 57165, 57218). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix admission metrics tests

Cleanup some typos in the admission metrics tests.

```release-note
NONE
```
2017-12-17 05:33:46 -08:00
Kubernetes Submit Queue
adc648da59
Merge pull request #57053 from prashima/static-provisioning-fix
Automatic merge from submit-queue (batch tested with PRs 56375, 56872, 57053, 57165, 57218). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Compare correct file names for volume detach operation

**What this PR does / why we need it**:
Current volume detach code compares volume path with disk path, as it is. This PR removes '.vmdk' extension from both paths and then compares them. This makes sure that correct comparison is done irrespective of a missing '.vmdk' extension from one of the paths.

**Which issue(s) this PR fixes**:
Fixes  https://github.com/vmware/kubernetes/issues/392 

**Special notes for your reviewer**:
Deployed cluster on vSphere and provisioned a static volume. Verified that a statically provisioned volume gets detached even when volume path didn't contain any .vmdk extension and disk path had .vmdk extension.

**Release note**:
```vSphere cloud provider: Fix detach operation for volumes, when .vmdk extension is not specified in volume path.```
2017-12-17 05:33:43 -08:00
Kubernetes Submit Queue
a73aee954f
Merge pull request #56872 from davidz627/logImprovement
Automatic merge from submit-queue (batch tested with PRs 56375, 56872, 57053, 57165, 57218). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Improved event generation in volume mount,attach, and extend operations

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #57217

refactored mount, attach, extend operation's so that all failures generate events and event generation is more consistent.

```release-note
Improved event generation in volume mount, attach, and extend operations
```
2017-12-17 05:33:41 -08:00
Kubernetes Submit Queue
665e8b2d65
Merge pull request #56375 from CaoShuFeng/glogV10
Automatic merge from submit-queue (batch tested with PRs 56375, 56872, 57053, 57165, 57218). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

remove extra level check of glog

**Release note**:
```release-note
NONE
```
2017-12-17 05:33:38 -08:00
Kubernetes Submit Queue
7a23bbb024
Merge pull request #57177 from liggitt/rbac-log
Automatic merge from submit-queue (batch tested with PRs 56386, 57204, 55692, 57107, 57177). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Raise RBAC DENY log level

Fixes #46877 
Fixes https://github.com/kubernetes/kubernetes/issues/55821

Can still be logged verbosely with `--vmodule=rbac*=5` if desired

```release-note
NONE
```
2017-12-17 04:19:47 -08:00
Kubernetes Submit Queue
45b5c0ec42
Merge pull request #57107 from liggitt/fix-e2e-panic
Automatic merge from submit-queue (batch tested with PRs 56386, 57204, 55692, 57107, 57177). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Check ns setup error during e2e

If namespace create fails during e2e setup, don't panic

/assign @tallclair 

```release-note
NONE
```
2017-12-17 04:19:44 -08:00
Kubernetes Submit Queue
380c2b6d0b
Merge pull request #55692 from vikaschoudhary16/dpUT
Automatic merge from submit-queue (batch tested with PRs 56386, 57204, 55692, 57107, 57177). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Refactor TestPodContainerDeviceAllocation for extensiblity/readability

**What this PR does / why we need it**:
This PR refactors and reorganizes TestPodContainerDeviceAllocation(). This PR changes the logic to use array for iterating over test conditions and other refactoring such as moving test pod creation logic to a separate function. 

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
None
```
cc @sjenning @jeremyeder @RenaudWasTaken @vishh @mindprince @jiayingz @ScorpioCPH

/sig node
2017-12-17 04:19:42 -08:00
Kubernetes Submit Queue
d117e86e60
Merge pull request #57204 from yujuhong/bump-cos-version
Automatic merge from submit-queue (batch tested with PRs 56386, 57204, 55692, 57107, 57177). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

GCE: bump COS image version to cos-stable-63-10032-71-0

```release-note
GCE: bump COS image version to cos-stable-63-10032-71-0
```
2017-12-17 04:19:39 -08:00
Kubernetes Submit Queue
d0a667bdd3
Merge pull request #56386 from dixudx/fix_gnu_cp
Automatic merge from submit-queue (batch tested with PRs 56386, 57204, 55692, 57107, 57177). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

don't use gnu cp features in building etcd image

**What this PR does / why we need it**:
> cp: illegal option -- t

use gnu-cp to copy files

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #56383

**Special notes for your reviewer**:
/assign @ixdy @mkumatag 

**Release note**:

```release-note
None
```
2017-12-17 04:19:36 -08:00
edisonxiang
d80dbe7fea Fix GCE CreateVolume allocates in chunks of GiB incorrectly 2017-12-17 19:43:37 +08:00
stewart-yu
2ab0e3217e remove unuse code in cloudprovider 2017-12-17 17:21:14 +08:00
stewart-yu
386258b07a [cloudprovider]should reuse code rather than rewrite it 2017-12-17 17:00:52 +08:00
Kubernetes Submit Queue
cab439b20f
Merge pull request #57195 from marcoceppi/s390x-fixes
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Use an s390x default-http-backend

This needs to be refactored to eventually say all non x86 architectures place a -arch() in the image name to support ppc64el, arm, etc.

Most all gcr.io/google_containers have -arch() image names.


**What this PR does / why we need it**:

Adds s390x images for when deploying to z system mainframes for default-http-backend image

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes https://github.com/juju-solutions/bundle-canonical-kubernetes/issues/455

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2017-12-17 00:54:22 -08:00