Fix issues in k8s yaml files (#3403)

- Change apigroups to apiGroups in cluster-role.yaml
- Change resourcenames to resourceNames in cluster-role.yaml
- Add selector in deploy.yaml and ds.yaml

Signed-off-by: Akash Srivastava <akash.srivastava@openebs.io>

examples/k8s/cluster-role.yaml

@@ -51,9 +51,9 @@ rules:
   verbs:
   - list
   - watch
-- apigroups:
+- apiGroups:
   - extensions
-  resourcenames:
+  resourceNames:
   - weave-scope
   resources:
   - podsecuritypolicies
@@ -66,4 +66,4 @@ rules:
   - volumesnapshotdatas
   verbs:
   - list
-  - watch
+  - watch

examples/k8s/deploy.yaml

@@ -11,6 +11,9 @@ metadata:
   namespace: weave
 spec:
   replicas: 1
+  selector:
+    matchLabels:
+      app: weave-scope
   revisionHistoryLimit: 2
   template:
     metadata:

examples/k8s/ds.yaml

@@ -11,6 +11,9 @@ metadata:
   namespace: weave
 spec:
   minReadySeconds: 5
+  selector:
+    matchLabels:
+      app: weave-scope
   template:
     metadata:
       labels: