kube-prometheus: Upgrade to grafana v5

assets/grafana/_grafanalib.py

assets/grafana/deployment.dashboard.py

assets/grafana/kubernetes-capacity-planning.dashboard.py

assets/grafana/kubernetes-cluster-health.dashboard.py

assets/grafana/kubernetes-control-plane-status.dashboard.py

assets/grafana/kubernetes-resource-requests.dashboard.py

assets/grafana/nodes.dashboard.py

assets/grafana/pods.dashboard.py

assets/grafana/raw-json-dashboards/etcd-dashboard.json

assets/grafana/statefulset.dashboard.py

grafana-image/Dockerfile

grafana-image/Makefile

grafana-image/config.ini

...ds-configmap-generator/bin/grafana_dashboards_generate.sh

...dashboards-configmap-generator/templates/ConfigMap.header

...a-dashboards-configmap-generator/templates/dashboard.foot

...dashboards-configmap-generator/templates/dashboard.header

...gmap-generator/templates/grafana-deployment-template.yaml

hack/scripts/generate-dashboards-configmap.sh

hack/scripts/generate-manifests.sh