os_ironic role should not require swift

[Jimmy McCrory]

When not being installed as a standalone service, the os_ironic role has several tasks[0] and the ironic.conf[1] file requiring that swift be available.

Depending on the deployer's environment and ironic driver used, swift shouldn't be a hard requirement.

[0] https://github.com/openstack/openstack-ansible-os_ironic/blob/master/tasks/ironic_post_install.yml#L40-L101
[1] https://github.com/openstack/openstack-ansible-os_ironic/blob/master/templates/ironic.conf.j2#L52-L59

[Michael Davies (mrda)]

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)

[Major Hayden (rackerhacker)]

Marking this one as wontfix because it might be better to open this bug with ironic directly.