[stable/coredns] allow nodeselector configuration (#7766)

Signed-off-by: Chris Randles <randles.chris@gmail.com>

stable/coredns/Chart.yaml

@@ -1,5 +1,5 @@
 name: coredns
-version: 1.0.1
+version: 1.1.0
 appVersion: 1.2.0
 description: CoreDNS is a DNS server that chains plugins and provides Kubernetes DNS Services
 keywords:

stable/coredns/templates/deployment.yaml

@@ -49,6 +49,10 @@ spec:
       {{- if .Values.tolerations }}
       tolerations:
 {{ toYaml .Values.tolerations | indent 8 }}
+      {{- end }}
+      {{- if .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml .Values.nodeSelector | indent 8 }}
       {{- end }}
       containers:
       - name: "coredns"

stable/coredns/values.yaml

@@ -76,6 +76,10 @@ servers:
 #            - master
 affinity: {}
 
+# Node labels for pod assignment
+# Ref: https://kubernetes.io/docs/user-guide/node-selection/
+nodeSelector: {}
+
 # expects input structure as per specification https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.11/#toleration-v1-core
 # for example:
 #   tolerations: