[ONOS-3739] Substitute copyright year during archetype gen

With this commit, we can substitute the copyright year during
archetype generation phase, so that we do not need to manually
input the copyright year.

Change-Id: I3c0e4cdc69a3fad7a90335332d5489604107b892
diff --git a/tools/package/archetypes/uitopo/src/main/resources/archetype-resources/pom.xml b/tools/package/archetypes/uitopo/src/main/resources/archetype-resources/pom.xml
index 7040a1b..71e38d9 100644
--- a/tools/package/archetypes/uitopo/src/main/resources/archetype-resources/pom.xml
+++ b/tools/package/archetypes/uitopo/src/main/resources/archetype-resources/pom.xml
@@ -1,7 +1,12 @@
+#set( $dummy = "" )
+#set( $date = $dummy.getClass().forName("java.util.Date").newInstance() )
+#set( $format = $dummy.getClass().forName("java.text.SimpleDateFormat").newInstance() )
+#set( $pattern = $format.applyPattern("yyyy") )
+#set( $year = $format.format($date) )
 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
-  ~ Copyright 2016 Open Networking Laboratory
+  ~ Copyright ${year} 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.