Also tweak how we do the plugin config a bit, I don't like the
whole 'do special stuff if deployment_mode is set' thing any
more.
Signed-off-by: Adam Williamson <awilliam@redhat.com>
The capability to handle a variance between prod and staging
here is just temporary while I'm testing the new fixed asset
handling stuff by deploying it on staging. Once it's tested
and merged we'll just have prod and staging do the same thing.
But for now we need to cleanly handle them having the static
disk images in different places.
