packaging: Don't generate .jar.index files

The service has already been modified so that it doesn't use the
.index.jar files, but both the service and the tools need to be modified
so that they don't generate new .index.jar files.

Change-Id: If842d8d4a9c1ba8303f440d2ce70c42f23a29e06
Bug-Url: https://bugzilla.redhat.com/923389
Signed-off-by: Juan Hernandez <juan.hernandez@redhat.com>