Replaces the template-clone flow with: create empty VM shell, download the
cloud image on the node (cached by filename, optional checksum verification),
qm importdisk, attach as scsi0. NIC config, snippet upload, ssh keys, disk
resize, and start remain unchanged (already generic).
New helpers: _run_node_command (strict SSH exec with custom timeout and
non-zero-exit detection, unlike the best-effort _exec_ssh_command),
_download_cloud_image (idempotent download + checksum check),
_find_default_image_storage (content=images discovery, mirrors the existing
snippet-storage discovery).
24 tests pass (10 new: _run_node_command x2, _download_cloud_image x4, plus
rewrites of the 4 existing create_vm_from_cloud_init tests for the new flow).
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