LU-4957 ofd: convert FID to OSTID before put it on wire

LU-4957 ofd: convert FID to OSTID before put it on wire

For the compatible purpose, OFD has to convert the FID(IDIF)
to ost_id before reply to MDT(in ofd_create_hdl), because the
old MDT(<2.6) can not deal with IDIF, but only ostid.

Do not LASSERT for comparing OFD precreate fids with local
used FID, instead it will just return -ESTALE.

Change-Id: Ic35cca7a78bff2e4ca24f507a2c32666ab032579
Signed-off-by: Wang Di <di.wang@intel.com>
Reviewed-on: http://review.whamcloud.com/10580
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>