We should be starting from stable/stein on the "old" side
of grenade runs now. Rather than hard-code the branch, just
use the BASE_DEVSTACK_BRANCH variable.
Change-Id: I1b0406f870ed0ae5622cfa7421a6cca00d0f891c
Our cgit instance will be going away and opendev.org is the new
preferred URL for browsing our git repos. Redirects will exist for the
foreseeable future, but it's more efficient to just go directly to the
new locations.
Change-Id: I7dd9d454da63167832bab02c89be98a2ce03b72a