Add ip management for macvtap/bridged interfaces about terrible

[89luca89]

We could setup the declaration of the interfaces this way:

              ifaces_example:
                iface_1:
                  name: ens0
                  type: "nat"
                  ip: 192.168.122.12
                  # mac_address: ...
                iface_2:
                  name: ens1
                  type: "bridge"
                  ip: 192.168.124.199
                  # mac_address: ...
                iface_3:
                  name: ens2
                  type: "bridge"
                  ip: 10.80.80.23
                  # mac_address: ...

and then in te terraform use this to template

{% for iface in ifaces_example %}

    {% if ifaces_example[iface].type  == "nat" %}
        # uses static  IP
        network_interface {
        network_name   = "{{ network_name }}"
        hostname       = var.hostname
        addresses      = ["{{ ifaces_example[iface].ip }}"]

        {% if ifaces_example[iface].mac_address  is defined %}
            mac            = "{{ ifaces_example[iface].mac_address }}"
        {% endif %}

        wait_for_lease = true
        }

    {% elif ifaces_example[iface].type == "bridge" %}

        network_interface {
        bridge  = "{{ ifaces_example[iface].name }}"
        hostname = var.hostname
        }
    {% elif ifaces_example[iface].type == "bridge" %}

        network_interface {
        macvtap  = "{{ ifaces_example[iface].name }}"
        hostname = var.hostname
        }
    {% endif %}

{% endfor %}

[89luca89]

Working on the implementation in branch 1_networking_refactor,
we need to implement the network restarting phase that is proper to the various distro's network management.