Updates RBAC to 1.8

Author: solsson

rbac-namespace-default/node-reader.yml

@@ -8,7 +8,7 @@
 #
 ---
 kind: ClusterRole
-apiVersion: rbac.authorization.k8s.io/v1beta1
+apiVersion: rbac.authorization.k8s.io/v1
 metadata:
   name: node-reader
   labels:
@@ -22,7 +22,7 @@ rules:
   - get
 ---
 kind: ClusterRoleBinding
-apiVersion: rbac.authorization.k8s.io/v1beta1
+apiVersion: rbac.authorization.k8s.io/v1
 metadata:
   name: kafka-node-reader
   labels: