Fix rbac issue in cephfs plugin

remove unwanted rules and update
rbac to have permission to modify
endpoints and configmaps in the
current namespace.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

deploy/cephfs/kubernetes/csi-nodeplugin-rbac.yaml

@@ -22,9 +22,6 @@ rules:
   - apiGroups: ["storage.k8s.io"]
     resources: ["volumeattachments"]
     verbs: ["get", "list", "watch", "update"]
-  - apiGroups: [""]
-    resources: ["configmaps"]
-    verbs: ["get", "list"]
 
 ---
 kind: ClusterRoleBinding