[helm] Fixed persistency for Grafana (#1098)

* Fixed persistency for Grafana

* Fixed legendFormat for Grafana dashboards

helm/grafana/Chart.yaml

@@ -8,4 +8,4 @@ maintainers:
 name: grafana
 sources:
 - https://github.com/coreos/prometheus-operator
-version: 0.0.20
+version: 0.0.21

helm/grafana/templates/grafana-deployment.yaml

@@ -42,7 +42,7 @@ spec:
 {{- end }} 
         volumeMounts:
         - name: grafana-storage
-          mountPath: /var/grafana-storage
+          mountPath: /var/lib/grafana
         ports:
         - name: web
           containerPort: 3000

helm/kube-prometheus/Chart.yaml

@@ -9,4 +9,4 @@ maintainers:
 name: kube-prometheus
 sources:
   - https://github.com/coreos/prometheus-operator
-version: 0.0.33
+version: 0.0.34

helm/kube-prometheus/requirements.yaml

@@ -52,7 +52,7 @@ dependencies:
     condition: deployExporterNode
 
   - name: grafana
-    version: 0.0.20
+    version: 0.0.21
     #e2e-repository: file://../grafana
     repository: https://s3-eu-west-1.amazonaws.com/coreos-charts/stable/
     condition: deployGrafana