Fix issue with reprepro-import distribution
Fix issue with reprepro-import distribution

Now that it is possible to run reprepro-import against different
repos, we need to properly build up our distribution for reprepro. Now
we we'll use jessie-newton or jessie-newton-backports depending on the
job.

Change-Id: I1e5d0ba03bceedebf27ed4b4a76ac0f6bfa588ce
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

openstack-infra/project-config,openstack-infra/project-config,Tesora/tesora-project-config,Tesora/tesora-project-config