Right now `mcs cluster stop` command has a fixed 5 minute timeout waiting for transaction to finish/rollback, For better UX `mcs cluster stop` must interactively ask a user to initiate force shutdown after a minute of waiting for the cluster to stop. There must be parameters to the command to set the timeout and enable force shutdown w/o confirmation, e.g.

```
mcs cluster shutdown
... after a minute
There were data changing operations running on the cluster that are now rolling back. Do you want to initiate a force shutdown?
!!! Force shutdown might affect the availability of tables used by the mentioned operations !!!