Allow empty accounts in validate-genesis

[anilcse]

Summary

We've experienced Error: error validating genesis file genesis.json: empty or nil coins for address error on validate-genesis cmd in one of our internal testnets. It found out to be with a module account, which had no tokens at the time of exporting the state (we tried to validate the exported genesis). I believe module accounts can be without any tokens so, this validation can be removed.

While digging through this, it's seems like it is not valid anymore to have this check on any address. Because x/feegrant and x/authz would allow authorizing accounts with no balances as well. So empty accounts are still valid there.

Proposal

Allow empty accounts in the genesis and remove the check in validate genesis

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[clevinson]

Seems like a valid request to me. Should we try and get this in before 0.42?

[tac0turtle]

this is present on the cosmoshub as well. we should try to get it into the next release

gaiad validate-genesis
Error: error validating genesis file /Users/markobaricevic/.gaia/config/genesis.json: empty or nil coins for address cosmos1qqq9nqqllyvqfzen9w2sr0zp8jsfnycsjs8qwv