LU-14182 lov: cancel layout lock on replay deadlock

LU-14182 lov: cancel layout lock on replay deadlock

layout locks are not replayed and instead cancelled as unused, what
requires to take lov_conf_lock. the semaphore may be already taken by
cl_lock_flush() which prepares a new IO which is not be able to be
sent to MDS as it is in the recovery.

HPE-bug-id: LUS-9232
Signed-off-by: Vitaly Fertman <c17818@cray.com>
Change-Id: I1a1a91a81c19ad4deca9ff581107512642f0b666
Reviewed-by: Alexey Lyashkov <c17817@cray.com>
Reviewed-by: Andriy Skulysh <c17819@cray.com>
Tested-by: Jenkins Build User <nssreleng@cray.com>
Reviewed-on: https://review.whamcloud.com/40867
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alexey Lyashkov <alexey.lyashkov@hpe.com>
Reviewed-by: Andriy Skulysh <askulysh@gmail.com>
Reviewed-by: Mike Pershin <mpershin@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>