unit tests fo the new apps_list in the device group info

Author: Naor Livne

test/test_nebula_python_sdk.py

@@ -170,6 +170,7 @@ def test_device_group_flow(self, device_group="unit_test_device_group", app="uni
         self.assertEqual(reply["status_code"], 200)
         self.assertTrue(isinstance(reply["reply"]["prune_id"], int))
         self.assertTrue(isinstance(reply["reply"]["device_group_id"], int))
+        self.assertTrue(isinstance(reply["reply"]["apps_list"], list))
         for app_reply in reply["reply"]["apps"]:
             self.assertTrue(isinstance(app_reply["app_id"], int))
             self.assertTrue(isinstance(app_reply["containers_per"], dict))