add missing apiGroup in nfs-nodeplugin-crb

fixes: #311

Signed-off-by: Leela Venkaiah G <lgangava@ibm.com>

Author: leelavg

config/csi-rbac/nfs_nodeplugin_cluster_role_binding.yaml

@@ -9,3 +9,4 @@ subjects:
 roleRef:
   kind: ClusterRole
   name: nfs-nodeplugin-cr
+  apiGroup: rbac.authorization.k8s.io

deploy/charts/ceph-csi-operator/templates/nfs-nodeplugin-crb-rbac.yaml

@@ -5,7 +5,7 @@ metadata:
   labels:
   {{- include "ceph-csi-operator.labels" . | nindent 4 }}
 roleRef:
-  apiGroup: ""
+  apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole
   name: '{{ include "ceph-csi-operator.fullname" . }}-nfs-nodeplugin-cr'
 subjects: