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-attacher-rbac.yaml

@@ -10,9 +10,6 @@ apiVersion: rbac.authorization.k8s.io/v1
 metadata:
   name: cephfs-external-attacher-runner
 rules:
-  - apiGroups: [""]
-    resources: ["events"]
-    verbs: ["get", "list", "watch", "update"]
   - apiGroups: [""]
     resources: ["persistentvolumes"]
     verbs: ["get", "list", "watch", "update"]

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

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

@@ -22,12 +22,6 @@ rules:
   - apiGroups: ["storage.k8s.io"]
     resources: ["storageclasses"]
     verbs: ["get", "list", "watch"]
-  - apiGroups: [""]
-    resources: ["events"]
-    verbs: ["list", "watch", "create", "update", "patch"]
-  - apiGroups: [""]
-    resources: ["configmaps"]
-    verbs: ["get", "list", "create", "delete"]
 
 ---
 kind: ClusterRoleBinding
@@ -42,3 +36,35 @@ roleRef:
   kind: ClusterRole
   name: cephfs-external-provisioner-runner
   apiGroup: rbac.authorization.k8s.io
+
+---
+kind: Role
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  # replace with non-default namespace name
+  namespace: default
+  name: cephfs-external-provisioner-cfg
+rules:
+  - apiGroups: [""]
+    resources: ["endpoints"]
+    verbs: ["get", "watch", "list", "delete", "update", "create"]
+  - apiGroups: [""]
+    resources: ["configmaps"]
+    verbs: ["get", "list", "create", "delete"]
+
+---
+kind: RoleBinding
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: cephfs-csi-provisioner-role-cfg
+  # replace with non-default namespace name
+  namespace: default
+subjects:
+  - kind: ServiceAccount
+    name: cephfs-csi-provisioner
+    # replace with non-default namespace name
+    namespace: default
+roleRef:
+  kind: Role
+  name: cephfs-external-provisioner-cfg
+  apiGroup: rbac.authorization.k8s.io