Nova rebuild support sync update instance's name
Nova rebuild support sync update instance's name

rebuild operation of nova may change the name of the instance, this
patch support update the name to cascaded.

Change-Id: I52fe578e80e52d8f465f92eefdf1eec8e36e5de3

openstack/tricircle,stackforge/tricircle,openstack/tricircle,stackforge/tricircle