Add Apache license header to search_data.json

docs/search_data.json

@@ -1,6 +1,22 @@
 ---
 layout: null
 ---
+/*
+ * 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.
+ */
 {
   {% for page in site.pages %}{% if page.title != nil %}
 

pom.xml

@@ -484,6 +484,7 @@
               <exclude>docs/Rakefile</exclude>
               <exclude>docs/rss.xml</exclude>
               <exclude>docs/sitemap.txt</exclude>
+              <exclude>docs/search_data.json</exclude>
               <exclude>**/dependency-reduced-pom.xml</exclude>
 
               <!-- bundled from anchor -->