Add cluster role to get namespaces

k8s/role-namespaces-read.yaml

@@ -0,0 +1,9 @@
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: clusterrole-read-namespaces
+rules:
+  - apiGroups: [""]
+    resources: ["namespaces"]
+    verbs: ["get", "list"]