Zuul: Remove project name
Zuul: Remove project name

Zuul no longer requires the project-name for in-repo configuration.
Omitting it makes forking or renaming projects easier.

Change-Id: I898631af31c12498434223949dab4c0d6a58c3db

NeCTAR-RC/horizon,ChameleonCloud/horizon,openstack/horizon,noironetworks/horizon,noironetworks/horizon,NeCTAR-RC/horizon,NeCTAR-RC/horizon,NeCTAR-RC/horizon,ChameleonCloud/horizon,openstack/horizon,openstack/horizon,noironetworks/horizon,ChameleonCloud/horizon,noironetworks/horizon,ChameleonCloud/horizon,openstack/horizon