LU-2995 osd: Delete the ref of remote parent in del ..

LU-2995 osd: Delete the ref of remote parent in del ..

Try to delete remote dir from REMOTE PARENT during delete ..,
because the object might not be destroyed if it is being
opened by someone else, instead it will be inserted to the
ORPHAN dir, so if it does not delete the {.., REMOTE_PARENT},
it will be two parents for this remote dir.

Add remote object FID into op_data->op_fid3, so the stale check
will not fail during remote open.

Signed-off-by: wang di <di.wang@intel.com>
Change-Id: I6bbac9174869ae02f385ac52740bb2046f0f1bab
Reviewed-on: http://review.whamcloud.com/5791
Tested-by: Hudson
Reviewed-by: Fan Yong <fan.yong@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>