LU-3126 osd: remove fld lookup during configuration

LU-3126 osd: remove fld lookup during configuration

Remove fld lookup during configuration, so to avoid accessing
FLDB on MDT0 before MDT0 is setup.

1. add od_is_ost to check whether the FID is on OST, instead
of lookup in FLDB.

2. add oic_device in OI cache, so in OI cache lookup, it will
try to match device to avoid the ino of agent inode is being
retrieved from OI cache. Then osd_remote_fid, which will trigger
fld lookup, can be removed from osd index lookup.

Signed-off-by: wang di <di.wang@intel.com>
Change-Id: I85649431f47ad8aa8bd1e46a7b074e15b080bb1d
Reviewed-on: http://review.whamcloud.com/7266
Tested-by: Hudson
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Mike Pershin <mike.pershin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>