I reported a bug today about glance using the tenant_name as owner:
https://bugs.launchpad.net/bugs/950364
The current use is incorrect and will cause breakages in the case that a
tenant is renamed. It seems vital that we get this fixed before
releasing essex, although I don't know if we need to provide some sort
of migration script for old images. Brian Waldon is on vacation until
next week, so if any of the rest of glance core has opinions or ideas
(Jay?) I think we need to get something underway ASAP.