LU-3534 mdt: move last_rcvd obj update to LOD

LU-3534 mdt: move last_rcvd obj update to LOD

Move last_rcvd/version_obj updating from OSD to LOD, so
the update can be recorded in the update log, and last_rcvd
and version obj can be updated correctly in the recovery
process.

Change-Id: I2492864a66fab0028370d2d27255f6f458066197
Signed-off-by: Wang Di <di.wang@intel.com>
Reviewed-on: http://review.whamcloud.com/11909
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>