[VmOnG5K/service] extract `start_virtualmachines` to make it a service
This shouldn't be too hard. We should pay attention that this should work on another platform than Grid'5000 and potentially on latest (stable) Ubuntu (Chameleon).
This shouldn't be too hard. We should pay attention that this should work on another platform than Grid'5000 and potentially on latest (stable) Ubuntu (Chameleon).