Merge branch 'gatekeeper-cleanup-labels' into 'master'

Remove control-plane label from Gatekeeper namespace

Closes #1388

See merge request platform-one/big-bang/bigbang!2315

chart/templates/gatekeeper/namespace.yaml

@@ -4,11 +4,10 @@ kind: Namespace
 metadata:
   labels:
     admission.gatekeeper.sh/ignore: no-self-managing
-    control-plane: controller-manager
     gatekeeper.sh/system: "yes"
     app.kubernetes.io/name: gatekeeper
     app.kubernetes.io/component: "core"
     {{- include "commonLabels" . | nindent 4}}
     istio-injection: disabled
   name: gatekeeper-system
-{{- end }}
\ No newline at end of file
+{{- end }}