plugins: handle corner case when PID file doesn't exist
plugins: handle corner case when PID file doesn't exist

If we get a notification and the service dies immediately, and also
removes its pid file, we need to take corrective action.

Signed-off-by: Joachim Wiberg <583c295fd7602c168ad814279bbc3894ba65f5d6@gmail.com>

troglobit/finit,troglobit/finit