Increase MIN_BW_TO_ADVERTISE_DIRSERVER above RELAY_REQUIRED_MIN_BANDWIDTH
MIN_BW_TO_ADVERTISE_DIRSERVER is 50KB, but RELAY_REQUIRED_MIN_BANDWIDTH is 75KB. So we might want to make the DIRSERVER bandwidth at least 150 KB, so that a dirserver can at least deliver one client one consensus in 10 seconds (clients generally wait a few seconds for dirservers to deliver a consensus).