Alphabetize test modules list that has gone out of order.

Change-Id: I9f9a8bdc1a16a172d8a3cabb1b7005accb32ced6
Signed-off-by: Mooli Tayer <mtayer@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/19512
Reviewed-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-by: Saggi Mizrahi <smizrahi@redhat.com>