TMSS-445: fix test

SAS/TMSS/backend/test/t_permissions_system_roles.py

@@ -95,7 +95,7 @@ class SystemPermissionTestCase(unittest.TestCase):
                                                          specifications_doc=obs_spec,
                                                          cluster_url=cluster_url,
                                                          task_blueprint_url=obs_task_blueprint['url'],
-                                                         raw_feedback=' ')
+                                                         raw_feedback='Observation.Correlator.channelWidth=3051.7578125')
             obs_subtask = test_data_creator.post_data_and_get_response_as_json_object(obs_subtask_data, '/subtask/')
             cls.obs_subtask_id = obs_subtask['id']
             obs_subtask_output_url = test_data_creator.post_data_and_get_url(