[stable/kube-state-metrics] Use apiGroup policy rather than extension for k8s > 1.15 in ClusterRole psp-kube-state-metrics (#21563)

Signed-off-by: Karl-Philipp Richter <krichter@posteo.de>

stable/kube-state-metrics/Chart.yaml

@@ -6,7 +6,7 @@ keywords:
 - monitoring
 - prometheus
 - kubernetes
-version: 2.8.3
+version: 2.8.4
 appVersion: 1.9.5
 home: https://github.com/kubernetes/kube-state-metrics/
 sources:

stable/kube-state-metrics/templates/psp-clusterrole.yaml

@@ -9,7 +9,12 @@ metadata:
     app.kubernetes.io/instance: {{ .Release.Name }}
   name: psp-{{ template "kube-state-metrics.fullname" . }}
 rules:
+{{- $kubeTargetVersion := default .Capabilities.KubeVersion.GitVersion .Values.kubeTargetVersionOverride }}
+{{- if semverCompare "> 1.15.0-0" $kubeTargetVersion }}
+- apiGroups: ['policy']
+{{- else }}
 - apiGroups: ['extensions']
+{{- end }}
   resources: ['podsecuritypolicies']
   verbs:     ['use']
   resourceNames: