ag-cosmos-helper status should write to stdout, not stderr

[warner]

Describe the bug

I used ag-cosmos-helper status for the first time today. I was surprised that the machine-parseable JSON output is written to stderr, rather than stdout. It's a drag to require a redirect to parse the output.

Instead of:

% ag-cosmos-helper status 2>&1 | jq .SyncInfo

I'd prefer to run:

% ag-cosmos-helper status | jq .SyncInfo

If we can fix this, we could also update the guides at https://github.com/Agoric/agoric-sdk/wiki/Validator-Guide-for-Devnet#syncing-your-node and https://github.com/Agoric/agoric-sdk/wiki/Validator-Guide-for-Incentivized-Testnet#syncing-your-node to remove the 2>&1 bit.

[michaelfig]

We're working on it in cosmos/cosmos-sdk#8628 which should be backported to cosmos-sdk v0.42.x.

I don't know if there's value added by keeping the current issue open. Tracking, I guess.

[michaelfig]

Solved in cosmos-sdk v0.43.0-alpha1. We will be adopting the 0.43.0 release sooner or later.

[michaelfig]

Done!