LU-11952 mdt: fix reconstruct open

LU-11952 mdt: fix reconstruct open

We shouldn't start a new transaction on resend.

Store fid of an opened object and use it during
reconstruction of the resend.

Change-Id: I8c21e9661903d3d4090ad29e43480e2ba7e35c39
Cray-bug-id: LUS-6957, LUS-7286
Signed-off-by: Andriy Skulysh <c17819@cray.com>
Reviewed-by: Alexey Lyashkov <c17817@cray.com>
Reviewed-by: Vitaly Fertman <c17818@cray.com>
Reviewed-on: https://review.whamcloud.com/35112
Reviewed-by: Vitaly Fertman <vitaly.fertman@hpe.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Alexey Lyashkov <alexey.lyashkov@hpe.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Mike Pershin <mpershin@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>