Get ready for os-api-ref sphinx theme change
Get ready for os-api-ref sphinx theme change

Change-Id: Ib4c12c5f2efbdf0870fbaaf4951bcfe2fcf7c392

openstack/ironic,NaohiroTamura/ironic,SauloAislan/ironic,pshchelo/ironic,openstack/ironic,pshchelo/ironic,SauloAislan/ironic,NaohiroTamura/ironic