Make a slash governance proposal

[osmosis-labs]

Make a slash governance proposal

[ValarDragon]

From @hleb-albau

I created a small draft, now lets discuss next:

1. What validator state should be considered for slashing(now, proposal creating or other)? How it should influence delegations and re-delegations before and after slashing point? Should we allow safe re-delegate tokens during vote or during deposit or not?
2. What if chain has unbounding period is less than vote period? (maybe just leave it as is, just make sanity check before call actual slash). We loose info about delegations and re-delegations after unbound succeed.
3. Can validator and its delegators vote on prop?
4. It seems that gov module has very simple route handler that not allow to register more advanced checks on proposal creation. For example, it is not possible to validate on proposal creation that validator exist and in active set. Maybe we need to advance route architecture?(or it should be done in ADR in other issue?)

[ValarDragon]

Re the questions:

1. I think the only way to do it efficiently in the SDK atm is Now. That will cover unbondings / redelegations though.
2. Hrm, I think thats an ok edge case. Would be good to potentially emit a warning if theres a sensible way of doing so.
3. Yup! If your being slashed, you should be allowed to say that you don't agree
4. Yeah, this is really unfortunate that none of the relevant validation methods get the context passed in. I think for a v1 of this feature, we'd have to be ok with the edge case of being able to slash inactives.