Bind metrics-server containers to linux nodes to avoid Windows scheduling on kubernetes cluster includes linux nodes and windows nodes

Author: wawa0210

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

@@ -46,6 +46,8 @@ spec:
     spec:
       priorityClassName: system-cluster-critical
       serviceAccountName: metrics-server
+      nodeSelector:
+        kubernetes.io/os: linux
       containers:
       - name: metrics-server
         image: k8s.gcr.io/metrics-server-amd64:v0.3.5