Update gitkube-setup.yaml to new k8s api

I've updated deployment apiVersion to apps/v1 due to 1.16 k8s api updates.
New api version also need selector field.

manifests/gitkube-setup.yaml

@@ -38,14 +38,17 @@ metadata:
  name: gitkube-ci-conf
  namespace: kube-system
 ---
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
  labels:
  app: gitkubed
  name: gitkubed
  namespace: kube-system
 spec:
+ selector:
+ matchLabels:
+ app: gitkubed
  replicas: 1
  strategy:
  rollingUpdate:
@@ -101,14 +104,17 @@ spec:
  name: gitkube-ci-conf
  name: gitkube-ci-conf
 ---
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
  labels:
  app: gitkube-controller
  name: gitkube-controller
  namespace: kube-system
 spec:
+ selector:
+ matchLabels:
+ app: gitkube-controller
  replicas: 1
  strategy:
  rollingUpdate:
@@ -134,5 +140,3 @@ spec:
  valueFrom:
  fieldRef:
  fieldPath: metadata.namespace
-
-