adding maven-plugin to onos-change-version

Change-Id: I0e568213f5752174df0610426c38aa88e0d6bbd3
diff --git a/tools/build/onos-change-version b/tools/build/onos-change-version
index 0bba6cd..d904502 100755
--- a/tools/build/onos-change-version
+++ b/tools/build/onos-change-version
@@ -34,3 +34,6 @@
     sed -i "" -E "1,/<onos.version>/s/<onos.version>[^<]*</<onos.version>$NEW_VERSION</g" $pom
 done
 
+pushd tools/package/maven-plugin
+mvn versions:set -DnewVersion=$NEW_VERSION versions:commit
+popd