Add feature to restart server

[leloup314]

The RaspberryPi server controlling the setup is currently operating close to the irradiation setup, inside a lead / poly brick bunker. Due to the high radiation environment during extraction, the server experiences SEE which causes a kernel crash. The server needs to be power cycled to operate again. Currently this means that irrad_control on the DAQ PC must be restarted as well which means a new output file is created. It would be easier to reconnect via paramiko and send the previous server config (including zmq ports) and restart the server.