staging: lustre: lov: Don't wait for active target with OBD_STATFS_NODELAY

Patch for LU-631 which was landed before the upstream merge broke
OBD_STATFS_NODELAY behaviour. It adds unnecessary delay while
running df command with inactive OSTs. We shouldn't try to recover
connection to OST in this case.

Signed-off-by: Andriy Skulysh <Andriy_Skulysh@xyratex.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4010
Reviewed-on: http://review.whamcloud.com/7762


Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>