Service fails to start after reboot

`/var/run/spaceprobed` does not exist after reboot, and so the python script (running as spaceprobed user) is unable to create the PID file.

Manual workaround is to run the following steps after a reboot:
```bash
# mkdir /var/run/spaceprobed
# chown spaceprobed.spaceprobed /var/run/spaceprobed
# rc-service spaceprobed start
```