Bug#930367: cloud.debian.org: vagrant images: use systemd-networkd for virtualbox provider
I noticed a difference between providers for the same box
* with libvirt provider, `systemd-networkd` service is enabled and started
after first boot of VM.
* with virtualbox provider, `systemd-networkd`
service is disabled and stopped after first boot of VM.
It will be better to have only one way to manage network for the same
image with different providers.