New opendev.org CI mirrors for OVH regions. The old BHS1 mirror was
in the openstack.org domain, so is added new. There was an old GRA1
mirror in the opendev.org domain, so remote it and increment the
ordinal in its short hostname to avoid a collision in the inventory
cache.
This is being done to switch to un-billed flavors in this provider,
to simplify internal billing for their donation of resources.
Change-Id: I05770856b5704aa438ed6bc54ec42ba9efb5cd2a