Emit close event off stack

This was a Zalgo containment breach that prevented clusters from
shuting down gracefully.
Add process title to cluster debug messages
Use debuglog for test client
Add worker post mortem debug message
Configure ad hoc test rig to force stop and restart
Fix worker restart

Previous change no longer removes the process from a stopped worker.
Fix missing state transition in unexpected stop during standby
Ignore health pulse in standby

Because buffered messages from a dead process.
Fix bug in load balancer server restarting

Should use requested address, in particular, instead of last given.
Fix bug that caused load balancers to auto restart

When the intended behavior was to stop.
Remove superfluous restart debug logs

These overlap with the corresponding status change log
Fix bug in property path to logger