Update apiVersion for compatability with newer K8s versions (#58)

* Update apiVersion for compatability with newer K8s versions

* This selector may also be required now

Author: Calebjh

deploy/pubsub/templates/deployment.yaml

@@ -10,13 +10,17 @@ imagePullSecrets:
 - name: {{ tpl .Values.imagePullSecretsName . }}
 {{ end }}
 ---
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: {{ include "pubsub.fullname" . }}
   namespace: {{ .Release.Namespace }}
 spec:
   replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "pubsub.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
   template:
     metadata:
       labels: