update the windows kubeproxy pod priority level

Author: zylxjtu

templates/addons/windows/calico/kube-proxy-windows.yaml

@@ -20,6 +20,7 @@ spec:
           hostProcess: true
           runAsUserName: "NT AUTHORITY\\system"
       hostNetwork: true
+      priorityClassName: system-node-critical
       containers:
       - image: sigwindowstools/kube-proxy:${KUBERNETES_VERSION/+/_}-calico-hostprocess
         args: ["$env:CONTAINER_SANDBOX_MOUNT_POINT/kube-proxy/start.ps1"]