Allowing the specification of a in the CoreDNS helm chart. (#13416)

Signed-off-by: Steven Wade <steven@stevenwade.co.uk>

stable/coredns/Chart.yaml

@@ -1,6 +1,6 @@
 name: coredns
-version: 1.5.0
-appVersion: 1.5.0
+version: 1.5.1
+appVersion: 1.5.1
 description: CoreDNS is a DNS server that chains plugins and provides Kubernetes DNS Services
 keywords:
 - coredns

stable/coredns/templates/deployment.yaml

@@ -37,6 +37,9 @@ spec:
         {{- end }}
     spec:
       serviceAccountName: {{ template "coredns.serviceAccountName" . }}
+      {{- if .Values.priorityClassName }}
+      priorityClassName: {{ .Values.priorityClassName | quote }}
+      {{- end }}
       {{- if .Values.isClusterService }}
       dnsPolicy: Default
       {{- end }}

stable/coredns/values.yaml

@@ -45,6 +45,9 @@ rbac:
 # isClusterService specifies whether chart should be deployed as cluster-service or normal k8s app.
 isClusterService: true
 
+# Optional priority class to be used for the coredns pods
+priorityClassName: ""
+
 servers:
 - zones:
   - zone: .