Add firewalls settings integration test

Author: lgarber-akamai

test/integration/groups/test_networking.py

@@ -54,3 +54,13 @@ def test_create_firewall_with_devices(create_firewall_with_device):
 
     assert len(devices) == 1
     assert devices[0].entity.id == target_instance.id
+
+
+def test_get_global_firewall_settings(test_linode_client):
+    settings = test_linode_client.networking.firewall_settings()
+
+    assert settings.default_firewall_ids is not None
+    assert all(
+        k in {"vpc_interface", "public_interface", "linode", "nodebalancer"}
+        for k in vars(settings.default_firewall_ids).keys()
+    )