Updating copyrights

New format: 'Copyright .year-present Open Networking Laboratory'

Change-Id: I1a9e58b355b775e75245ad875a2d7a4df3f03098
diff --git a/utils/stc/sample/scenario.xml b/utils/stc/sample/scenario.xml
index 8cee631..0d6a990 100644
--- a/utils/stc/sample/scenario.xml
+++ b/utils/stc/sample/scenario.xml
@@ -1,5 +1,5 @@
 <!--
-  ~ Copyright 2015 Open Networking Laboratory
+  ~ Copyright 2015-present Open Networking Laboratory
   ~
   ~ Licensed under the Apache License, Version 2.0 (the "License");
   ~ you may not use this file except in compliance with the License.