update license header

hugegraph-hubble/hubble-be/src/test/python/steps/check_server_status.py

@@ -1,5 +1,20 @@
 # -*- coding: UTF-8 -*-
 
+#  Licensed to the Apache Software Foundation (ASF) under one or more
+#  contributor license agreements. See the NOTICE file distributed with this
+#  work for additional information regarding copyright ownership. The ASF
+#  licenses this file to You under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#  License for the specific language governing permissions and limitations
+#  under the License.
+
 import json
 import sys