Add hash of the TX that generated notification
to neofs/netmap event structures. Adapt all
neofs/netmap wrapper calls to new structures.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
This event will be produced by new epoch handler. All
cleanups should be synchronous because smart contract can't
store inner ring votes forever. Therefore voting should be done
in similar time interval for all inner ring nodes.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>