logs gas consumption at fileLogger

if calculated fee rate is negative, then apply zeroFeeRate

…zsystm/lsm-gas-optimization

based on mainnet supply, rich account get fund when initialize genesis on simulation testing.

each operation which needs token should get fund from rich account.

this is for optimizing gas consumption when QueueLiquidUnstake

instead of Iterate chunks separately, iterate it once when calc net amount state essentials.

GetValidator().String is a redundant computation. We can just use ValidatorAddress field.