Ensure middlewared is the last service to stop

Upon troubleshooting another unrelated issue, I found that the command `service middlewared restart` command does not actually restart the middlewared process as expected.

I have to manually `kill -9` the PID and then do `service middlewared start`

Believe it or not, we actually do restart middleware quite a lot in the field. The reason why we do this is because we have to hot-patch customer systems that are getting tracebacks in the alert system.