LU-1445 ost: enable fid on OST support on OST

Enable fid on OST support on OST.

Signed-off-by: Wang Di <di.wang@intel.com>
Change-Id: I51c242e7630d52c578f4ddfe1149b43eb9d5f7c5
Reviewed-on: http://review.whamcloud.com/4791
Reviewed-by: Mike Pershin <mike.pershin@intel.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>