Revert "vinyl: remove tx_manager->vlsn"
Revert "vinyl: remove tx_manager->vlsn"

This reverts commit 7bc88b06b3d2629fb72012d692d6849e9b545117.

rtsisyk/tarantool,rtsisyk/tarantool,mejedi/tarantool,rtsisyk/tarantool,mejedi/tarantool,mejedi/tarantool,rtsisyk/tarantool,mejedi/tarantool