[cinder-csi-plugin] Sync RBAC as per latest sidecars (kubernetes#1580)

This commit is to sync the RBAC rules as per latest sidecars
versions.

Author: ramineni

manifests/cinder-csi-plugin/cinder-csi-controllerplugin-rbac.yaml

@@ -73,6 +73,9 @@ rules:
   - apiGroups: ["snapshot.storage.k8s.io"]
     resources: ["volumesnapshotcontents"]
     verbs: ["get", "list"]
+  - apiGroups: ["storage.k8s.io"]
+    resources: ["volumeattachments"]
+    verbs: ["get", "list", "watch"]
 
 ---
 kind: ClusterRoleBinding
@@ -151,7 +154,7 @@ rules:
     verbs: ["get", "list", "watch"]
   - apiGroups: [""]
     resources: ["persistentvolumeclaims/status"]
-    verbs: ["update", "patch"]
+    verbs: ["patch"]
   - apiGroups: [""]
     resources: ["events"]
     verbs: ["list", "watch", "create", "update", "patch"]