Increase total supply validation + add to total supply with added accounts

[colin-axner]

Summary of Bug

When starting up an internal testnet, we used an existing genesis file to import existing accounts and then added account balances to the genesis file using the gaiad add-genesis-account.

Two things turned out wrong:

• adding the account balances did not update the total supply
• running validate-genesis which resides in genutil, does basic validation of the genesis which results in a simple check if the supply is a valid sdk coin. Our genesis file with an incorrect total supply successfully passed validation

Solution

Adding a genesis account should update the total supply. Running genesis validation should check that all the account balances equal the total supply

Part of this may be a cosmos/gaia issue, but the supply validation is definitely an SDK issue

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[clevinson]

@colin-axner We're looking to cut v0.40.2 next week for an updated hub proposal. Do you think this will get resolved in time, or should we punt to the next v0.40.x point release.

[fedekunze]

Adding a genesis account should update the total supply. Running genesis validation should check that all the account balances equal the total supply

The balance vs supply check is already done by the invariant during init genesis (although not on validation). We just need to add the acc balance to the supply on genesis acc creation