wait_for_active was checking that the status was != 'BUILDING' when in reality the status string is 'BUILD'.

This was surfaced in errors of this form.

{{{
UnexpectedServerStatus('Expected 8a69332e-8762-43f4-abda-3e22b30bb963 to have ACTIVE, has BUILD',)
}}}

Not having a well documented or stable state machine is going to continue to be problematic.