nfs-client: rbac no longer alpha, add serviceAccount to deployment

RBCA is no longer alpha and thus `v1` is only needed.

Service account has been added to deployment.yaml in order to get the
example to work correctly.

deploy/auth/clusterrole.yaml

@@ -1,5 +1,5 @@
 kind: ClusterRole
-apiVersion: rbac.authorization.k8s.io/v1alpha1
+apiVersion: rbac.authorization.k8s.io/v1
 metadata:
   name: nfs-client-provisioner-runner
 rules:

deploy/auth/clusterrolebinding.yaml

@@ -1,5 +1,5 @@
 kind: ClusterRoleBinding
-apiVersion: rbac.authorization.k8s.io/v1alpha1
+apiVersion: rbac.authorization.k8s.io/v1
 metadata:
   name: run-nfs-client-provisioner
 subjects:

deploy/deployment.yaml

@@ -11,6 +11,7 @@ spec:
       labels:
         app: nfs-client-provisioner
     spec:
+      serviceAccountName: nfs-client-provisioner
       containers:
         - name: nfs-client-provisioner
           image: quay.io/external_storage/nfs-client-provisioner:latest