osmosid tx gov submit-proposal -> submit-legacy-proposal

[dzianisv]

Hey, recently I noticed that osmosid tx gov submit-proposal cli changed. I started to use submit-legacy-proposal instead, but for a private testnet and the following proposal

{
      title: 'Staking Param Change',
      description: 'Update max validators',
      changes: [
        {
          subspace: 'staking',
          key: 'MaxValidators',
          value: 105
        }
      ],
      deposit: '20000000uosmo'
 }

I get the following error parameter max_validators not registered.

I tried with key MaxValidators and max_validators as well, it worked before v21

cmdline osmosisd tx gov submit-legacy-proposal param-change /tmp/proposal625121331 --from=owner-key --keyring-backend=file --chain-id=private-net-1 --node=tcp://osmosis-validator:26657 --gas-prices=0.01uosmo --gas-adjustment=3.0 --gas=auto --output=json --yes

osmosisd version --home=/tmp/.osmosisd
21.0.0