Adds redirects for renamed ironic dev docs
Adds redirects for renamed ironic dev docs

Change-Id: I0678621c8f3024f4799951edb24483aee677c9cc
Closes-bug: 1323712

potsmaster/openstack-manuals,kairoaraujo/openstack-manuals,saeki-masaki/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,kairoaraujo/openstack-manuals,Akasurde/openstack-manuals,openstack/openstack-manuals,potsmaster/openstack-manuals,gongysh2004/openstack-manual,gongysh2004/openstack-manual,Akasurde/openstack-manuals,saeki-masaki/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals