Improve the ledger reset command to by-default preserve keys and configs

[sug0]

When we reset the ledger state, despite Namada correctly operating as a validator node, CometBFT operates under the assumption it is connected to a full node.

[cwgoes]

@sug0 Is this still applicable?

[sug0]

yep. I think the main reason for this behavior is that the command purges keys, as well as data. maybe it could be solved with a --keep-validator-keys flag, or smth

[tzemanovic]

I propose we change the default behavior not to purge keys as it's a common footgun and instead add some non-default flag to do that only when explicitly request. This should also cover the Namada wallet file and perhaps configs too

[sug0]

I propose we change the default behavior not to purge keys as it's a common footgun and instead add some non-default flag to do that only when explicitly request. This should also cover the Namada wallet file and perhaps configs too

yeah agreed