Adds an extension for blueprint rebuild-for-ha
Evacuation of VM from a failed host for HA.
New api supports recreate/rebuild modes. With shared storage,
VM is recreated on the target from disk.
Otherwise, rebuild from original image is performed.
DocImpact
Change-Id: Id7e3e68dbaaf74e9314440d98195a92454078fd9
Co-authored-by: Oshrit Feder <oshritf@il.ibm.com>