[releng] bind moving tar files to package stage

By having this in the package stage, you can do a mvn package
without a build failure. It also means that you don't have
to do a mvn install for build to complete, which
means not having to unnecessarily modify mvn's local repo

Change-Id: I82242698bf9aeaba80b1e4a81353f47a15736180
Signed-off-by: Jonah Graham <jonah@kichwacoders.com>