Network Interface Names are Hard-Coded

[MoeweX]

Currently, we assume that the network interfaces of the emulated fog machines have fixed interface names.
This used to be eth0 and eth1, for Ubuntu we currently assume ens5 and ens6.

There are two options:

• the node manager identifies which interfaces are available for the generation of the Netplan configuration and tcconfigs
• the node agent configures Netplan by itself after checking interfaces. It then also has to translate node manager requests and have sudo privileges.