update example yaml, ca needs delete nodes.

Author: RainbowMango

cluster-autoscaler/cloudprovider/huaweicloud/examples/cluster-autoscaler-svcaccount.yaml

@@ -19,7 +19,7 @@ rules:
     verbs: ["get", "update"]
   - apiGroups: [""]
     resources: ["nodes"]
-    verbs: ["watch", "list", "get", "update"]
+    verbs: ["watch", "list", "get", "update", "delete"]
   - apiGroups: [""]
     resources:
       - "pods"