Added nodeSelector to Concourse worker (#3876)

* Added additionalSpec to values and statefulset template

* conflict resolve

* Bumped chart version

* added space to comment

* replaced additionalSpec with more finegrained nodeSelector

stable/concourse/Chart.yaml

@@ -1,5 +1,5 @@
 name: concourse
-version: 1.0.0
+version: 1.0.1
 appVersion: 3.9.0
 description: Concourse is a simple and scalable CI system.
 icon: https://avatars1.githubusercontent.com/u/7809479

stable/concourse/templates/worker-statefulset.yaml

@@ -20,6 +20,10 @@ spec:
         {{ $key }}: {{ $value | quote }}
         {{- end }}
     spec:
+    {{- with .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml . | indent 8 }}
+    {{- end }}
       serviceAccountName: {{ if .Values.rbac.create }}{{ template "concourse.worker.fullname" . }}{{ else }}{{ .Values.rbac.workerServiceAccountName }}{{ end }}
       tolerations:
 {{ toYaml .Values.worker.tolerations | indent 8 }}

stable/concourse/values.yaml

@@ -323,6 +323,11 @@ worker:
   #   iam.amazonaws.com/role: arn:aws:iam::123456789012:role/concourse
   #
 
+  ## Node selector for the worker nodes.
+  ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector
+  nodeSelector: {}
+  # nodeSelector: {type: concourse}
+
   ## Additional affinities to add to the worker pods.
   ## Useful if you prefer to run workers on non-spot instances, for example
   ##