tests: add a few integration tests.

tests/integration/systemd/networkctl.bats

@@ -0,0 +1,18 @@
+#!/usr/bin/env bats
+# apparmor.d - Full set of apparmor profiles
+# Copyright (C) 2025 Alexandre Pujol <alexandre@pujol.io>
+# SPDX-License-Identifier: GPL-2.0-only
+
+load ../common
+
+@test "networkctl: List existing links with their status" {
+    sudo networkctl list
+}
+
+@test "networkctl: Show an overall network status" {
+    sudo networkctl status
+}
+
+@test "networkctl: Reload configuration files (.netdev and .network)" {
+    sudo networkctl reload
+}