Updated openstack/openstack
Project: openstack-dev/devstack  1bb9ef63c535b274a4b8c905f54335bbb1d779c3
null
Update compute driver name for Ironic

Commit 08448e3a mistakenly updated the location of the Ironic compute
driver to be loaded from within the Nova tree.  However, no such module
exists as the compute and scheduler drivers both live in the Ironic tree.
This reverts that and adds a note explaining the setting.

Change-Id: I7f32f77bd7e5fd1f6b41014ac71bbf6e1a7d84cf