feat: update ClusterRoleBinding with default namespace (#1991)

Author: yarinkos

Diff for: sample-operators/webpage/k8s/operator.yaml

@@ -50,6 +50,7 @@ metadata:
 subjects:
 - kind: ServiceAccount
   name: webpage-operator
+  namespace: default
 roleRef:
   kind: ClusterRole
   name: webpage-operator