Made metrics-server critical service managed by addon-manager

cluster/addons/metrics-server/auth-delegator.yaml

@@ -2,6 +2,9 @@ apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:
   name: metrics-server:system:auth-delegator
+  labels:
+    kubernetes.io/cluster-service: "true"
+    addonmanager.kubernetes.io/mode: Reconcile
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole

cluster/addons/metrics-server/auth-reader.yaml

@@ -3,6 +3,9 @@ kind: RoleBinding
 metadata:
   name: metrics-server-auth-reader
   namespace: kube-system
+  labels:
+    kubernetes.io/cluster-service: "true"
+    addonmanager.kubernetes.io/mode: Reconcile
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: Role

cluster/addons/metrics-server/metrics-apiservice.yaml

@@ -2,6 +2,9 @@ apiVersion: apiregistration.k8s.io/v1beta1
 kind: APIService
 metadata:
   name: v1alpha1.metrics
+  labels:
+    kubernetes.io/cluster-service: "true"
+    addonmanager.kubernetes.io/mode: Reconcile
 spec:
   service:
     name: metrics-server

cluster/addons/metrics-server/metrics-server-deployment.yaml

@@ -3,6 +3,9 @@ kind: ServiceAccount
 metadata:
   name: metrics-server
   namespace: kube-system
+  labels:
+    kubernetes.io/cluster-service: "true"
+    addonmanager.kubernetes.io/mode: Reconcile
 ---
 apiVersion: extensions/v1beta1
 kind: Deployment
@@ -11,6 +14,8 @@ metadata:
   namespace: kube-system
   labels:
     k8s-app: metrics-server
+    kubernetes.io/cluster-service: "true"
+    addonmanager.kubernetes.io/mode: Reconcile
 spec:
   selector:
     matchLabels:
@@ -20,6 +25,8 @@ spec:
       name: metrics-server
       labels:
         k8s-app: metrics-server
+      annotations:
+        scheduler.alpha.kubernetes.io/critical-pod: ''
     spec:
       serviceAccountName: metrics-server
       containers:

cluster/addons/metrics-server/metrics-server-service.yaml

@@ -4,6 +4,8 @@ metadata:
   name: metrics-server
   namespace: kube-system
   labels:
+    addonmanager.kubernetes.io/mode: Reconcile
+    kubernetes.io/cluster-service: "true"
     kubernetes.io/name: "Metrics-server"
 spec:
   selector: