Add support for k8s v1.16.0-beta.2 (#5148)

Cleaned up deprecated APIs:
apps/v1beta1
apps/v1beta2
extensions/v1beta1 for ds,deploy,rs

Add workaround for deploying helm using incompatible
deployment manifest.
Change-Id: I78b36741348f47a999df3841ee63cf4e6f377830

roles/network_plugin/contiv/templates/contiv-api-proxy.yml.j2

@@ -1,5 +1,5 @@
 # This manifest deploys the Contiv API Proxy Server on Kubernetes.
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: DaemonSet
 metadata:
   name: contiv-api-proxy
@@ -9,6 +9,9 @@ metadata:
 spec:
   updateStrategy:
     type: RollingUpdate
+  selector:
+    matchLabels:
+      k8s-app: contiv-api-proxy
   template:
     metadata:
       name: contiv-api-proxy

roles/network_plugin/contiv/templates/contiv-cleanup.yml.j2

@@ -1,6 +1,6 @@
 ---
 kind: DaemonSet
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 metadata:
   name: contiv-cleanup
   namespace: kube-system

roles/network_plugin/contiv/templates/contiv-etcd-proxy.yml.j2

@@ -1,6 +1,6 @@
 ---
 kind: DaemonSet
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 metadata:
   name: contiv-etcd-proxy
   namespace: kube-system

roles/network_plugin/contiv/templates/contiv-etcd.yml.j2

@@ -1,6 +1,6 @@
 ---
 kind: DaemonSet
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 metadata:
   name: contiv-etcd
   namespace: kube-system

roles/network_plugin/contiv/templates/contiv-netmaster.yml.j2

@@ -1,6 +1,6 @@
 ---
 kind: DaemonSet
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 metadata:
   name: contiv-netmaster
   namespace: kube-system
@@ -9,6 +9,9 @@ metadata:
 spec:
   updateStrategy:
     type: RollingUpdate
+  selector:
+    matchLabels:
+      k8s-app: contiv-netmaster
   template:
     metadata:
       name: contiv-netmaster

roles/network_plugin/contiv/templates/contiv-netplugin.yml.j2

@@ -3,7 +3,7 @@
 # as the Contiv CNI plugins and network config on
 # each master and worker node in a Kubernetes cluster.
 kind: DaemonSet
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 metadata:
   name: contiv-netplugin
   namespace: kube-system

roles/network_plugin/contiv/templates/contiv-ovs.yml.j2

@@ -2,7 +2,7 @@
 apiVersion: apps/v1
 # This manifest deploys the contiv-ovs pod.
 kind: DaemonSet
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 metadata:
   name: contiv-ovs
   namespace: kube-system