test/smoke: dump PID of failed servers
test/smoke: dump PID of failed servers

- Getting a lot of random crashes on macOS, trying to work out why.

opentable/sous,opentable/sous,opentable/sous,samsalisbury/sous,opentable/sous,samsalisbury/sous,samsalisbury/sous,opentable/sous,samsalisbury/sous,samsalisbury/sous