Change yum priority of the rdo-trunk delorean repo
Change yum priority of the rdo-trunk delorean repo

We need to ensure that our delorean instance has priority, as the
main delorean instance has some package overlap with ours.

Change-Id: I90018702a70e40f5a29da630411dd7b50d24e6a8

rdo-management/instack-undercloud,dmsimard/instack-undercloud,eprasad/instack-undercloud,bcrochet/instack-undercloud,dpkshetty/instack-undercloud,rdo-management/instack-undercloud,dpkshetty/instack-undercloud,bcrochet/instack-undercloud,dmsimard/instack-undercloud,eprasad/instack-undercloud