kata-deploy: fix k8s 1.13 example files

update yaml, and update README to describe creation of the CRD in
Kubernetes versions < 1.14.

Fixes: #560

Signed-off-by: Eric Ernst <eric.ernst@intel.com>

kata-deploy/README.md

@@ -81,26 +81,31 @@ $ kubectl apply -f kata-deploy.yaml
 Workloads which utilize Kata can node-select based on `katacontainers.io/kata-runtime=true`, and are
 run through an applicable runtime if they are marked with the appropriate `runtimeClass` annotation.
 
+`runtimeClass` is a built-in type in Kubernetes versions 1.14 and greater. In Kubernetes 1.13, `runtimeClass`
+is defined through a custom resource definition. For Kubernetes 1.13:
+```sh
+  $ kubectl apply -f https://raw.githubusercontent.com/kata-containers/packaging/master/kata-deploy/k8s-1.13/runtimeclass-crd.yaml
+```
 
 In order to use a workload Kata with QEMU, first add a `RuntimeClass` as:
-- For k8s 1.14:
+- For Kubernetes 1.14:
   ```sh
   $ kubectl apply -f https://raw.githubusercontent.com/kata-containers/packaging/master/kata-deploy/k8s-1.14/kata-qemu-runtimeClass.yaml
   ```
 
-- For k8s 1.13:
+- For Kubernetes 1.13:
   ```sh
   $ kubectl apply -f https://raw.githubusercontent.com/kata-containers/packaging/master/kata-deploy/k8s-1.13/kata-qemu-runtimeClass.yaml
   ```
 
 
 In order to use a workload Kata with Firecracker, first add a `RuntimeClass` as:
-- For k8s 1.14:
+- For Kubernetes 1.14:
   ```sh
   $ kubectl apply -f https://raw.githubusercontent.com/kata-containers/packaging/master/kata-deploy/k8s-1.14/kata-fc-runtimeClass.yaml
   ```
 
-- For k8s 1.13:
+- For Kubernetes  1.13:
   ```sh
   $ kubectl apply -f https://raw.githubusercontent.com/kata-containers/packaging/master/kata-deploy/k8s-1.13/kata-fc-runtimeClass.yaml
   ```

kata-deploy/k8s-1.13/kata-fc-runtimeClass.yaml

@@ -1,5 +1,7 @@
+---
 kind: RuntimeClass
 apiVersion: node.k8s.io/v1alpha1
 metadata:
     name: kata-fc
-handler: kata-fc
+spec:
+    runtimeHandler: kata-fc

kata-deploy/k8s-1.13/kata-qemu-runtimeClass.yaml

@@ -1,12 +1,14 @@
 ---
 kind: RuntimeClass
 apiVersion: node.k8s.io/v1alpha1
-metadata:
-    name: kata
-handler: kata
----
-kind: RuntimeClass
-apiVersion: node.k8s.io/v1alpha1
 metadata:
     name: kata-qemu
-handler: kata-qemu
+spec:
+    runtimeHandler: kata-qemu
+---
+kind: RuntimeClass
+apiVersion: node.k8s.io/v1alpha1
+metadata:
+    name: kata
+spec:
+    runtimeHandler: kata

kata-deploy/k8s-1.13/runtimeclass-crd.yaml

@@ -0,0 +1,26 @@
+kind: CustomResourceDefinition
+apiVersion: apiextensions.k8s.io/v1beta1
+metadata:
+  name: runtimeclasses.node.k8s.io
+  labels:
+    addonmanager.kubernetes.io/mode: Reconcile
+spec:
+  group: node.k8s.io
+  version: v1alpha1
+  versions:
+    - name: v1alpha1
+      served: true
+      storage: true
+  names:
+    plural:   runtimeclasses
+    singular: runtimeclass
+    kind:     RuntimeClass
+  scope: Cluster
+  validation:
+    openAPIV3Schema:
+      properties:
+        spec:
+          properties:
+            runtimeHandler:
+              type: string
+              pattern: '^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*)?$'