Update kube-state-metrics and Grafana

* https://github.com/kubernetes/kube-state-metrics/releases/tag/v2.0.0-rc.1
* https://github.com/grafana/grafana/releases/tag/v7.5.1

addons/prometheus/exporters/kube-state-metrics/deployment.yaml

@@ -25,7 +25,7 @@ spec:
       serviceAccountName: kube-state-metrics
       containers:
       - name: kube-state-metrics
-        image: k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.0.0-rc.0
+        image: k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.0.0-rc.1
         ports:
           - name: metrics
             containerPort: 8080