MRP-1445 quota: fix the deadlock during ost recovery

Deadlock could happen when OST is replaying a write request during
recovery, which needs OST to send a dqacq request to the quota
master.  However, the quota master on the OST hasn't been set up yet,
thus the OST would wait infinitely until the quota master is set. On
the other hand, OST's quota master will be set only after MDT
reconnects back to the OST.  But since OST gets stuck and cannot
handle the final ping req from the MDT, MDT will not finish its
reconnection. Therefore neither OST nor MDT can make any progress and
the OST's recovery stalls.

The fix is to ignore quota check and adjust during the request replay
phase, since all have already been done the first time the requests
get handled.

Signed-off-by: Cheng Shao <cheng_shao@xyratex.com>
Change-Id: Ic14d0ee809d79a4d510c37c93064ac63017ff57a
Reviewed-on: http://morpheus.xyus.xyratex.com:8443/gerrit/981
Reviewed-by: Alexey Lyashkov <Alexey_Lyashkov@xyratex.com>
Reviewed-by: Andrew Perepechko <Andrew_Perepechko@xyratex.com>
Tested-by: Jenkins
Tested-by: Elena Gryaznova <Elena_Gryaznova@xyratex.com>
Reviewed-by: Vitaly Fertman <Vitaly_Fertman@xyratex.com>