Quantum has been renamed to Neutron

Adjust configs to use the moved Neutron
related git repos instead of the Quantum ones.

Change-Id: Ia93866c987ba3ac8829452f599957fe86bb8999f
Reviewed-on: https://review.openstack.org/35994
Approved: Monty Taylor <mordred@inaugust.com>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Tested-by: Jenkins