Support Multiple Network Interface Controllers per Host

[dastergon]

TC Panel at the moment supports only one NIC, which is assigned manually. However, there are cases where a machine has more than one NIC. The Traffic Control in the Linux kernel works in a per-NIC basis, so it is very important to let users select their target NIC. The Ansible plugin in TC Panel could be enhanced and extended to fetch all the available NICs from the hosts using the feature of facts that Ansible offers. At the web interface, a drop-down input field should let users decide which interface should be shaped.