The pickfirstBalancer and baseBalancer are logging a lot of messages under normal operation. Those messages can not be associated to a server connection because no connection address is part of the messages. They are messages that are only useful when debugging issues.
Only log them when the verbose level is at least 2, to reduce the amount of log messages under normal operation.
WithBalancerName dial option specifies the name of the balancer to be used by the ClientConn. Service config updates can NOT override the balancer option.
