This change allows Ceph OSDs to respond to logical disk changes
and continue to function instead of failing to initialize after
such a change. For example, /dev/sdd is deployed as an OSD disk
and then subsequently becomes /dev/sde due to a hardware-related
event. This change allows the OSD to adapt and run as /dev/sde.
Change-Id: I6c22088b8d884f9dd300d026415fb126af4b41d4
b4d485b8ad