- Add get_pif_list()

        "ansible_xen_pifs": {
            "eth0": {
                "gateway": "192.168.44.1",
                "ip": "192.168.44.211",
                "netmask": "255.255.255.0",
                "uuid": "97024375-fae9-ef3b-4aaa-26083910bf76"
            },
            "eth1": {
                "gateway": "",
                "ip": "",
                "netmask": "",
                "uuid": "6b91fb92-3df4-7c4f-51ba-40e89d298df9"