add/update license headers
diff --git a/pregelix/pregelix-example/src/test/resources/hadoop/conf/hdfs-site.xml b/pregelix/pregelix-example/src/test/resources/hadoop/conf/hdfs-site.xml
index 8d29b1d..bff9a3e 100644
--- a/pregelix/pregelix-example/src/test/resources/hadoop/conf/hdfs-site.xml
+++ b/pregelix/pregelix-example/src/test/resources/hadoop/conf/hdfs-site.xml
@@ -1,4 +1,18 @@
<?xml version="1.0"?>
+<!--
+ ! Copyright 2009-2013 by The Regents of the University of California
+ ! Licensed 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 from
+ !
+ ! 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.
+ !-->
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->