Add support for k8s 1.16

Fixes #3356

1.16 removes some api groups that were already deprecated. From k8s blog
post (https://kubernetes.io/blog/2019/07/18/api-deprecations-in-1-16/):

```
- PodSecurityPolicy: will no longer be served from extensions/v1beta1 in
v1.16.
    Migrate to the policy/v1beta1 API, available since v1.10. Existing
    persisted data can be retrieved/updated via the policy/v1beta1 API.
- DaemonSet, Deployment, StatefulSet, and ReplicaSet: will no longer be
served from extensions/v1beta1, apps/v1beta1, or apps/v1beta2 in v1.16.
    Migrate to the apps/v1 API, available since v1.9. Existing persisted
    data can be retrieved/updated via the apps/v1 API.
```

Previous PRs had already made this change at the Helm templates level,
but we still needed to do it at the API calls and tests.

The integration tests ran fine for k8s 1.12 and 1.15. They fail on 1.16
because the upgrade integration test tries to install linkerd 2.5 which is not
compatible with 1.16.

Signed-off-by: Alejandro Pedraza <alejandro@buoyant.io>

cli/cmd/testdata/inject_contour.input.yml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_already_injected.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
@@ -163,7 +163,7 @@ spec:
         name: linkerd-identity-end-entity
 status: {}
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
@@ -328,7 +328,7 @@ spec:
         name: linkerd-identity-end-entity
 status: {}
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
@@ -493,7 +493,7 @@ spec:
         name: linkerd-identity-end-entity
 status: {}
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_already_injected.input.yml

@@ -1,5 +1,5 @@
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
@@ -37,7 +37,7 @@ spec:
         name: linkerd-proxy
 status: {}
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
@@ -74,7 +74,7 @@ spec:
       - name: linkerd-proxy
 status: {}
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
@@ -113,7 +113,7 @@ spec:
         name: linkerd-init
 status: {}
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment.input.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_config_overrides.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_config_overrides.input.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_controller_name.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
@@ -163,7 +163,7 @@ spec:
         name: linkerd-identity-end-entity
 status: {}
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_controller_name.input.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
@@ -34,7 +34,7 @@ spec:
         resources: {}
 status: {}
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_debug.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_empty_proxy_version_config.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_empty_resources.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_empty_resources.input.yml

@@ -1,5 +1,5 @@
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_empty_version_config.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_hostNetwork_false.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_hostNetwork_false.input.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_hostNetwork_true.input.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_injectDisabled.input.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_no_init_container.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_overridden.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_overridden_noinject.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_udp.golden.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_udp.input.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_deployment_uninjected.input.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_istio.input.yml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_list.golden.yml

@@ -1,6 +1,6 @@
 apiVersion: v1
 items:
-- apiVersion: apps/v1beta1
+- apiVersion: apps/v1
   kind: Deployment
   metadata:
     creationTimestamp: null
@@ -164,7 +164,7 @@ items:
             medium: Memory
           name: linkerd-identity-end-entity
   status: {}
-- apiVersion: apps/v1beta1
+- apiVersion: apps/v1
   kind: Deployment
   metadata:
     creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_list.input.yml

@@ -1,6 +1,6 @@
 apiVersion: v1
 items:
-- apiVersion: apps/v1beta1
+- apiVersion: apps/v1
   kind: Deployment
   metadata:
     creationTimestamp: null
@@ -35,7 +35,7 @@ items:
             name: http
           resources: {}
   status: {}
-- apiVersion: apps/v1beta1
+- apiVersion: apps/v1
   kind: Deployment
   metadata:
     creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_list_empty_resources.golden.yml

@@ -1,6 +1,6 @@
 apiVersion: v1
 items:
-- apiVersion: apps/v1beta1
+- apiVersion: apps/v1
   kind: Deployment
   metadata:
     creationTimestamp: null
@@ -164,7 +164,7 @@ items:
             medium: Memory
           name: linkerd-identity-end-entity
   status: {}
-- apiVersion: apps/v1beta1
+- apiVersion: apps/v1
   kind: Deployment
   metadata:
     creationTimestamp: null

cli/cmd/testdata/inject_emojivoto_list_empty_resources.input.yml

@@ -1,7 +1,7 @@
 ---
 apiVersion: v1
 items:
-  - apiVersion: apps/v1beta1
+  - apiVersion: apps/v1
     kind: Deployment
     metadata:
       creationTimestamp: null
@@ -36,7 +36,7 @@ items:
                   name: http
               resources: {}
     status: {}
-  - apiVersion: apps/v1beta1
+  - apiVersion: apps/v1
     kind: Deployment
     metadata:
       creationTimestamp: null

cli/cmd/testdata/inject_gettest_deployment.bad.input.yml

@@ -1,5 +1,5 @@
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 spec:
   template:
@@ -19,7 +19,7 @@ spec:
         ports:
         - containerPort: 9090
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: get-test-deploy-injected-2

cli/cmd/testdata/inject_gettest_deployment.good.golden.yml

@@ -1,9 +1,10 @@
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
   name: get-test-deploy-injected-1
 spec:
+  selector: null
   strategy: {}
   template:
     metadata:
@@ -165,12 +166,13 @@ spec:
         name: linkerd-identity-end-entity
 status: {}
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   creationTimestamp: null
   name: get-test-deploy-injected-2
 spec:
+  selector: null
   strategy: {}
   template:
     metadata:

cli/cmd/testdata/inject_gettest_deployment.good.input.yml

@@ -1,5 +1,5 @@
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: get-test-deploy-injected-1
@@ -21,7 +21,7 @@ spec:
         ports:
         - containerPort: 9090
 ---
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: get-test-deploy-injected-2

cli/cmd/testdata/install-cni-plugin_default.golden

@@ -147,7 +147,7 @@ data:
 # This manifest installs the linkerd 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: linkerd-cni
   namespace: linkerd

cli/cmd/testdata/install-cni-plugin_fully_configured.golden

@@ -147,7 +147,7 @@ data:
 # This manifest installs the linkerd 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: linkerd-cni
   namespace: other

cli/cmd/testdata/install-cni-plugin_fully_configured_equal_dsts.golden

@@ -147,7 +147,7 @@ data:
 # This manifest installs the linkerd 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: linkerd-cni
   namespace: other

cli/install/cni-template.go

@@ -169,7 +169,7 @@ data:
 # This manifest installs the linkerd 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: linkerd-cni
   namespace: {{.Namespace}}