refactor: remove k8s and use release name for instance

!8

templates/NetworkPolicy-kubeStateMetrics.yaml

@@ -5,6 +5,7 @@ kind: NetworkPolicy
 metadata:
   labels:
     app.kubernetes.io/component: exporter
+    app.kubernetes.io/instance: {{ $.Release.Name }}
     app.kubernetes.io/name: kube-state-metrics
     app.kubernetes.io/part-of: kube-prometheus
     app.kubernetes.io/version: 2.8.1
@@ -26,6 +27,7 @@ spec:
   podSelector:
     matchLabels:
       app.kubernetes.io/component: exporter
+      app.kubernetes.io/instance: {{ $.Release.Name }}
       app.kubernetes.io/name: kube-state-metrics
       app.kubernetes.io/part-of: kube-prometheus
   policyTypes: