* increase block_cost_max by 10 times to accommodate updated account read and write costs; Otherwise during performace test, banking_stage will start reject and retry transactions in next block, result regressed performance. * fix typo
* increase block_cost_max by 10 times to accommodate updated account read and write costs; Otherwise during performace test, banking_stage will start reject and retry transactions in next block, result regressed performance. * fix typo