Fixed broken mworker balancer
Fixed broken mworker balancer

Related to PR #27140.
Salt shares TCP socket between a number of master worker processes. To
work correctly it have to be bound before worker process is forked. If
it's bound after fork the only one worker will work, others will report
address already in use.

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt