Added metrics-server deployment for 1.16+

Since kubernetes 1.16 does not support older deployments api versions
this needs to be updated as well.

Added addon.yaml and amended README.md

addons/metrics-server/README.md

@@ -53,8 +53,12 @@ the top-level directory of this repository:
 # Kubernetes 1.7
 $ kubectl apply -f https://raw.githubusercontent.com/kubernetes/kops/master/addons/metrics-server/v1.7.x.yaml
 
-# Kubernetes 1.8+
+# Kubernetes 1.8+ <= 1.15
 $ kubectl apply -f https://raw.githubusercontent.com/kubernetes/kops/master/addons/metrics-server/v1.8.x.yaml
+
+# Kubernetes 1.16+
+$ kubectl apply -f https://raw.githubusercontent.com/kubernetes/kops/master/addons/metrics-server/v1.16.x.yaml
+
 ```
 
 ## Flags
@@ -95,4 +99,4 @@ behavior:
 
 - `--kubelet-preferred-address-types`: the order in which to consider
   different Kubelet node address types when connecting to Kubelet.
-  Functions similarly to the flag of the same name on the API server.
+  Functions similarly to the flag of the same name on the API server.

addons/metrics-server/addon.yaml

@@ -0,0 +1,22 @@
+kind: Addons
+metadata:
+  name: metrics-server
+spec:
+  addons:
+  - version: 0.1.0
+    selector:
+      k8s-addon: metrics-server.addons.k8s.io
+    manifest: v1.7.x.yaml
+    kubernetesVersion: "<1.8.0"
+  - version: 0.3.6
+    selector:
+      k8s-addon: metrics-server.addons.k8s.io
+    id: pre-k8s-1-16
+    kubernetesVersion: "<1.16.0"
+    manifest: v1.8.x.yaml
+  - version: 0.3.6
+    selector:
+      k8s-addon: metrics-server.addons.k8s.io
+    manifest: v1.16.x.yaml
+    id: k8s-1-16
+    kubernetesVersion: ">=1.16.0"

addons/metrics-server/v1.16.x.yaml

@@ -0,0 +1,147 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: metrics-server
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: metrics-server:system:auth-delegator
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:auth-delegator
+subjects:
+  - kind: ServiceAccount
+    name: metrics-server
+    namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: metrics-server-auth-reader
+  namespace: kube-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: extension-apiserver-authentication-reader
+subjects:
+  - kind: ServiceAccount
+    name: metrics-server
+    namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: system:metrics-server
+rules:
+  - apiGroups:
+      - ""
+    resources:
+      - pods
+      - nodes
+      - nodes/stats
+      - namespaces
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - "apps"
+    resources:
+      - deployments
+    verbs:
+      - get
+      - list
+      - watch
+---
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: system:aggregated-metrics-reader
+  labels:
+    rbac.authorization.k8s.io/aggregate-to-view: "true"
+    rbac.authorization.k8s.io/aggregate-to-edit: "true"
+    rbac.authorization.k8s.io/aggregate-to-admin: "true"
+rules:
+  - apiGroups: ["metrics.k8s.io"]
+    resources: ["pods"]
+    verbs: ["get", "list", "watch"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: system:metrics-server
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:metrics-server
+subjects:
+  - kind: ServiceAccount
+    name: metrics-server
+    namespace: kube-system
+---
+apiVersion: apiregistration.k8s.io/v1beta1
+kind: APIService
+metadata:
+  name: v1beta1.metrics.k8s.io
+spec:
+  service:
+    name: metrics-server
+    namespace: kube-system
+  group: metrics.k8s.io
+  version: v1beta1
+  insecureSkipTLSVerify: true
+  groupPriorityMinimum: 100
+  versionPriority: 100
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: metrics-server
+  namespace: kube-system
+  labels:
+    kubernetes.io/name: "Metrics-server"
+spec:
+  selector:
+    k8s-app: metrics-server
+  ports:
+    - port: 443
+      protocol: TCP
+      targetPort: 443
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: metrics-server
+  namespace: kube-system
+  labels:
+    k8s-app: metrics-server
+spec:
+  selector:
+    matchLabels:
+      k8s-app: metrics-server
+  template:
+    metadata:
+      name: metrics-server
+      labels:
+        k8s-app: metrics-server
+    spec:
+      serviceAccountName: metrics-server
+      volumes:
+      # mount in tmp so we can safely use from-scratch images and/or read-only containers
+      - name: tmp-dir
+        emptyDir: {}
+      containers:
+      - name: metrics-server
+        image: k8s.gcr.io/metrics-server-amd64:v0.3.6
+        imagePullPolicy: Always
+        command:
+            - /metrics-server
+            - --kubelet-preferred-address-types=InternalIP,Hostname,ExternalIP
+            - --kubelet-insecure-tls
+        volumeMounts:
+        - name: tmp-dir
+          mountPath: /tmp