[stable/grafana] Default to empty clusterrole rules (#6196)

* Ensure grafana clusterrole rules always defined

* Bump stable/grafana chart version

* Update Chart.yaml

stable/grafana/Chart.yaml

@@ -1,5 +1,5 @@
 name: grafana
-version: 1.11.5
+version: 1.11.6
 appVersion: 5.1.3
 kubeVersion: "^1.8.0-0"
 description: The leading tool for querying and visualizing time series and metrics.

stable/grafana/templates/clusterrole.yaml

@@ -17,5 +17,7 @@ rules:
 - apiGroups: [""] # "" indicates the core API group
   resources: ["configmaps"]
   verbs: ["get", "watch", "list"]
+{{- else }}
+rules: []
 {{- end}}
 {{- end}}