Comment 1 for bug 1634299

The Ironic role, by default, uses the agent_ipmitool driver, which currently requires Swift Temp URLs to retrieve the user image to deploy to the target node. So I believe for now there is a hard dependency on Swift. agent_ipmitool is the only supported driver today.

(If we were to provide additional driver options, this could be relaxed, but I'd only be happy doing so if we added them to a functional gate test. Ceph tempurls are supported I believe, but again, it would need to be tested)