Comment 2 for bug 1811473

I believe this is because of this pair of commits which require a larger initial disk
 (stx-config commit merged on Jan 10) fails if the disk is not large enough

https://github.com/openstack/stx-config/commit/6da46d861bd16cf4441ba107fb178c154a8c7f57

However those commits were only supposed to impact a build that is configured for containers/kubernetes