Merge pull request #64346 from dims/deprecate-in-tree-keystone-plugin

Automatic merge from submit-queue (batch tested with PRs 64057, 63223, 64346, 64562, 64408). 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>.

Deprecate the in-tree keystone plugin

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

We now have the `client-keystone-auth` in cloud-provider-openstack
repository:
https://github.com/kubernetes/cloud-provider-openstack/blob/master/docs/using-client-keystone-auth.md

So let's drop the in-tree one, so we can remove it in 1.12


**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
in-tree support for openstack credentials is now deprecated. please use the "client-keystone-auth" from the cloud-provider-openstack repository. details on how to use this new capability is documented here - https://github.com/kubernetes/cloud-provider-openstack/blob/master/docs/using-client-keystone-auth.md
```
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Kubernetes Submit Queue 2018-06-02 02:10:11 -07:00 committed by GitHub
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@ -140,6 +140,7 @@ func newOpenstackAuthProvider(_ string, config map[string]string, persister rest
var ttlDuration time.Duration
var err error
glog.Warningf("WARNING: in-tree openstack auth plugin is now deprecated. please use the \"client-keystone-auth\" kubectl/client-go credential plugin instead")
ttl, found := config["ttl"]
if !found {
ttlDuration = DefaultTTLDuration