LU-11924 osp: combine llog cancel operations

LU-11924 osp: combine llog cancel operations

The osp_sync_process_committed() cancels llog records one by one.
For each cancel it do open,transaction,mutex,write, etc. But most
of all cancels belongs to a single llog file. So they could
be combined.

The patch adds functions for cancelling array of indexes for a
llog file. And adds behavior and calls at
osp_sync_process_committed().

Signed-off-by: Alexander Boyko <c17825@cray.com>
Cray-bug-id: LUS-6836
Change-Id: I4f461687021b3f76595d403cdd0bb6aba8d93b53
Reviewed-on: https://review.whamcloud.com/34179
Tested-by: Jenkins
Reviewed-by: Sergey Cheremencev <c17829@cray.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andriy Skulysh <c17819@cray.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>