Use openstack cli for ironic operations starting with OSP14
Use openstack cli for ironic operations starting with OSP14

BZ#1602066 currently blocks any ironic cli operations on OSP14.
This changes switches to use the unified client instead to allow
deployment to move forward.

Change-Id: Ibdd9c7b1fc9ae4c9f4ee71b625fdfb8928a949d4

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared