Support Metrics Server as addon (#3560). (#3563)

* Support Metrics Server as addon (#3560).

* Update metrics server v0.3.1.

* Add metrics server test.

* Replace metrics server manifests with kubernetes/cluster/addons's.

* Modify metrics server manifests for kubespray.

* Follow PR#3558 node label node-role.kubernetes.io/master change

* Fix metrics server parameters base_metrics_server_... to metrics_server_...

* Fix too hard corded metrics_server_memory_per_node

* Add configurable insecure tls for metrics-apiservice

* Downloadable addon-resizer and extract parameter as variables

* Remove metrics server version from deployment name

* Metrics Server work when all masters has node role

* Download metrics-server and add-resizer container only on master

* ServiceAccount and ConfigMap is separated and fix application name

* Remove old metrics server clusterrole template

* Fix addon-resizer image specify

* Make InternalIP default for metrics_server_kubelet_preferred_address_types

Make InternalIP default because multiple preferrred address types does not work.

roles/kubernetes-apps/meta/main.yml

@@ -21,6 +21,14 @@ dependencies:
       - apps
       - registry
 
+  - role: kubernetes-apps/metrics_server
+    when:
+      - metrics_server_enabled
+      - inventory_hostname == groups['kube-master'][0]
+    tags:
+      - apps
+      - metrics_server
+
   - role: kubernetes-apps/persistent_volumes
     when:
       - persistent_volumes_enabled