_get_iface_addr_info KeyError: 'ip' in tgen_utils.py

[vikumarks]

All cases listed below failing with error mentioned above:

• alpha/bgp_routing/test_as_path_filtering.py::test_alpha_lab_bgp_routing_as_path_filtering
• alpha/bgp_routing/test_communities.py::test_alpha_lab_bgp_routing_communities
• alpha/bgp_routing/test_local_pref.py::test_alpha_lab_bgp_routing_local_pref
• alpha/bgp_routing/test_med_metric.py::test_alpha_lab_bgp_routing_med_metric
• alpha/bgp_routing/test_route_allow_as_in.py::test_alpha_lab_bgp_routing_allow_as_in
• alpha/bgp_routing/test_route_filtering.py::test_alpha_lab_bgp_routing_route_filtering
• alpha/bgp_routing/test_route_loop_detection.py::test_alpha_lab_bgp_routing_loop_detection
• alpha/bgp_routing/test_route_map.py::test_alpha_lab_bgp_routing_route_map
• alpha/bgp_routing/test_route_selection.py::test_alpha_lab_bgp_routing_route_selection
• alpha/bgp_routing/test_timers.py::test_alpha_lab_bgp_routing_timers
• bgp/test_bgp_route_flap.py::test_bgp_route_and_interface_flap
• tgen/test_traffic_all_ports.py::test_all_ports_tgen_w_traffic

if swp doesn't have any ip assigned, _get_iface_addr_info will return swp_info which will have only mac like {"mac": "xx:xx.."} and we'll see the key error.

`else:
check if the aaddress is on the device else add one
swp_info = {}
await _get_iface_addr_info(dd, swp, swp_info)

if dev_gw != ".".join(swp_info["ip"]):
E KeyError: "ip"
/usr/local/lib/python3.10/dist-packages/dent_os_testbed/utils/test_utils/tgen_utils.py:296: KeyError`

i think by adding below code we can fix the issue.
if 'ip' not in swp_info: out = await IpAddress.add(input_data=[{dd.host_name: [{"dev": swp, "prefix": dev_gw + "/24"}]}] ) elif dev_gw != ".".join(swp_info["ip"]): out = await IpAddress.add(input_data=[{dd.host_name: [{"dev": swp, "prefix": dev_gw + "/24"}]}],)