Now that gnocchi and ceilometer are pulling conf files from git
repositories rather than storing them in the role, we should ensure we
pull these files from the repo server rather than the upstream
git.openstack.org location when setting up gnocchi and ceilometer.
Change-Id: I26c18826f04bb206767cd5c7f9454f62faa726fa
Depends-On: I86389c1f7643a0634a85f165f62f089a316f040c