Setup AMQP properly for glance-registry

As we integrated OSprofiler with Glance:
https://review.openstack.org/#/c/105635/

glance-registry service started using notification API so it requires
proper seted up AMQP.

Change-Id: I0c4bb8a10960ed3ee06b67a209703d7ee81cf1ca
Remove AUTHORS

AUTHORS isn't really relevant in the days of git.  devstack has no
formal release where it would make sense to auto-generate an AUTHORS
file either.

If you really want to see who contributes, you can run

 $ git log --format='%aN <%aE>' | sort -f | uniq > AUTHORS

Change-Id: I9e154f7fdf814b4bd21a9d4cf82e46ec3db2f1ca
Merge "Remove AUTHORS"
Merge "Setup AMQP properly for glance-registry"
Merge branch 'master' of https://github.com/openstack-dev/devstack