fix(cli): the trunk gets its own row, as over REST

Since f35b59e a CLI poll reports trunk members as `3` with
trunk_group `Trk3`, but `show interfaces brief` has no line for Trk3
itself, so the trunk was missing from the interface list. The REST path
built that row on its own.

Both paths now use napalm_device_types.add_lag_interfaces, and the REST
path's copy is gone. One visible change there: `lag_members` is now in
port order (7, 10) instead of API order; the description already was.

The CLI path does not know the mode yet, so its trunks carry no
lag_mode. That needs `show trunks`, whose output is not at hand.

Needs napalm-device-types f3fa75b.

Closes #5

tests/unit/test_driver.py

@@ -884,3 +884,58 @@ class TestApiSetInterfaceExistingMembership:
             drv.set_interface("10", {"mode": "trunk", "trunk_vlans": [10]})
         assert "boom" in str(exc.value)
         api.put.assert_not_called()
+
+
+# ===========================================================================
+# LAG rows (#5)
+# ===========================================================================
+
+
+class TestApiGetInterfacesLag:
+    """The REST path's trunk rows, kept as they were when it moved to add_lag_interfaces."""
+
+    def _client(self, ports):
+        from napalm_procurve.api_client import ProcurveApiClient
+
+        client = ProcurveApiClient(hostname="192.168.0.1", username="manager", password="secret")
+        responses = {
+            "ports": {"port_element": ports},
+            "port-statistics": {"port_statistics_element": [
+                {"id": p["id"], "port_speed_mbps": 1000} for p in ports
+            ]},
+            "system/status/switch": {},
+        }
+        client.get = MagicMock(side_effect=lambda endpoint, **kw: responses[endpoint])
+        return client
+
+    def test_trunk_rows_with_mode(self):
+        client = self._client([
+            {"id": "1", "is_port_up": True, "is_port_enabled": True, "trunk_group": ""},
+            {"id": "3", "is_port_up": False, "is_port_enabled": True, "trunk_group": "trk3", "trunk_mode": "PTT_LACP"},
+            {"id": "4", "is_port_up": True, "is_port_enabled": True, "trunk_group": "trk3", "trunk_mode": "PTT_LACP"},
+            {"id": "10", "is_port_up": False, "is_port_enabled": True, "trunk_group": "trk6"},
+            {"id": "7", "is_port_up": False, "is_port_enabled": True, "trunk_group": "trk6"},
+        ])
+        ifaces = client.get_interfaces()
+
+        assert ifaces["trk3"]["lag_members"] == ["3", "4"]
+        assert ifaces["trk3"]["lag_mode"] == "lacp"
+        assert ifaces["trk3"]["is_up"] is True
+        assert ifaces["trk3"]["speed"] == 2000.0
+        assert ifaces["trk6"]["lag_members"] == ["7", "10"]
+        assert ifaces["trk6"]["lag_mode"] == "trunk"
+        assert ifaces["trk6"]["description"] == "LAG (7, 10)"
+        assert ifaces["3"]["trunk_group"] == "trk3"
+
+
+class TestCliGetInterfacesLag:
+    def test_trunk_rows_from_member_ports(self, driver):
+        driver._send_command = MagicMock(
+            side_effect=lambda cmd: SHOW_INTERFACES_BRIEF_INTRUSION if cmd == "show interfaces brief" else ""
+        )
+        ifaces = driver.get_interfaces()
+
+        assert ifaces["Trk3"]["lag_members"] == ["3", "4"]
+        assert ifaces["Trk6"]["lag_members"] == ["6", "7"]
+        assert ifaces["Trk6"]["is_up"] is True
+        assert ifaces["Trk6"]["is_enabled"] is True