LU-9311 pfl: shouldn't reprocess no-op layout change resent

LU-9311 pfl: shouldn't reprocess no-op layout change resent

There is another layout change resent case: the client's job has been
done by another client, referring lod_declare_layout_change -EALREADY
case, and it became a operation w/o transaction, so we should not do
the layout change, otherwise mdt_layout_change() will try to cancel
the granted server CR lock whose remote counterpart is still in hold
on the client, and a deadlock ensues.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Change-Id: I1a63fcd56f13790c4c7ccb1087b82acba81e88d6
Reviewed-on: https://review.whamcloud.com/26730
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>