Fix missing permissions for OpenStack cloud-controller-manager preventing metrics scraping (#6124)

roles/kubernetes-apps/external_cloud_controller/openstack/templates/external-openstack-cloud-controller-manager-roles.yml.j2

@@ -81,6 +81,19 @@ items:
     - list
     - get
     - watch
+  - apiGroups:
+    - authentication.k8s.io
+    resources:
+    - tokenreviews
+    verbs:
+    - create
+  - apiGroups:
+    - authorization.k8s.io
+    resources:
+    - subjectaccessreviews
+    verbs:
+    - create
+
 - apiVersion: rbac.authorization.k8s.io/v1
   kind: ClusterRole
   metadata: