Open Stack

> I don't know about documentation (but that may have come along with
> the new SLURP stuff), but Grenade enforces this sort of thing in
> CI. When we run Grenade against a branch we install the old version of
> OpenStack on the platform that the old version of OpenStack was tested
> on and then upgrade to the new current version of OpenStack. This
> upgrade is done on a host without upgrading the host itself.

Yeah, I think this is "expectation by code" in that grenade requires
that to work, so (assuming you're running those jobs) you'll be forced
into that support. Perhaps we need to expand on that a bit in words to
make sure it's clear.

--Dan