LU-15847 tgt: move tti_ transaction params to tsi_

LU-15847 tgt: move tti_ transaction params to tsi_

Move tti_mult_trans and tti_has_trans to tgt_session_info to
be available in all targets. This allows to cleanup old MDT
duplicating code and can be used for complex transaction
handling in MDT/OFD if needed.

Signed-off-by: Mikhail Pershin <mpershin@whamcloud.com>
Change-Id: I3f0c15e283b9e21c04a009f6cf346afa278e7095
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/47491
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: John Hammond <jhammond@whamcloud.com>
Reviewed-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>