Add custom network and bootstrap cloud-init files for Ubuntu and FreeBSD

[Rei-Tw]

This allows to deploy custom cloud-init configurations, for bootstrap and network.
FreeBSD already had bootstrap override, this PR includes network aswell.

How to use

# bootstrap-config.yaml
runcmd:
- mkdir /root/test

# network-config.yaml
ethernets:
  ens2:
    addresses: ['192.168.10.1/24']
vlans:
  ens2.10:
    id: 10
    link: ens2
    addresses: ['192.168.20.1/24']

You must bind the files inside the container :

topology:
  nodes:
    ubuntu:
      kind: generic_vm
      image: vrnetlab/canonical_ubuntu:jammy
      binds:
        - ./bootstrap-config.yaml:/config/bootstrap-cloud-init.yaml
        - ./network-config.yaml:/config/network-cloud-init.yaml

[Rei-Tw]

@hellt Hello,

Do you have time to check for this PR ?

Thanks,

[hellt]

Hi @Rei-Tw you will have to document the changes made in this PR and the non backwards compatibility considerations (as I see you removed the way to provide a single cloud init file?)