Filters _get_node_network() to bridge/OVSBridge types only (excludes physical
NICs, bonds), plus SDN vnets from _get_sdn_vnets(). vlan_aware: Linux bridge
reflects its bridge_vlan_aware config flag; OVS bridge always true; SDN vnet
always false (VLAN already fixed by the vnet's zone/tag).
4 new tests: bridge/vnet filtering, Linux bridge vlan_aware flag, OVS bridge
always vlan_aware, SDN vnet never vlan_aware. All 15 tests in the file pass.
- Replace fixed mgmt/capture dual-NIC parameters with generic nics list
- Loop over NICs to build net0, net1, ... config strings (access VLAN or trunk)
- Remove hardcoded 'ip link set eth1 up' Cloud-Init hack (caller responsibility)
- Add disk_resize_gb parameter for post-clone disk expansion (scsi0/virtio0/ide0/sata0)
- Make DHCP configuration per-NIC with sensible defaults (primary NIC only)
- Update docstrings and logging to reflect generic NIC architecture
Christian Manivong