Merge remote-tracking branch 'master' into release-0.22

README.md

experimental/metrics-server/metrics-server-cluster-role.yaml

jsonnet/kube-prometheus/alerts/node.libsonnet

...rometheus/kube-state-metrics/kube-state-metrics.libsonnet

...theus-operator-0alertmanagerCustomResourceDefinition.yaml

...metheus-operator-0prometheusCustomResourceDefinition.yaml

...eus-operator-0servicemonitorCustomResourceDefinition.yaml

manifests/0prometheus-operator-deployment.yaml

manifests/kube-state-metrics-deployment.yaml

manifests/kube-state-metrics-serviceMonitor.yaml

manifests/prometheus-rules.yaml