SW-818: Merge branch 'SW-818' into 'LOFAR-Release-4_0'

SW-818: had to mock away an ssh call to lcu as well.

See merge request !65

SAS/TriggerServices/test/t_trigger_service.py

@@ -125,6 +125,10 @@ class TestALERTHandler(unittest.TestCase):
         self.addCleanup(popen_patcher.stop)
         popen_patcher.start()
 
+        get_current_stations_patcher = mock.patch('lofar.common.lcu_utils.get_current_stations', return_value=['cs001'])
+        self.addCleanup(get_current_stations_patcher.stop)
+        get_current_stations_patcher.start()
+
     def test_valid_voevent_should_invoke_tbb_dump(self):
         with mock.patch('lofar.mac.tbbservice.client.tbbservice_rpc.TBBRPC.do_tbb_subband_dump') as dump, \
              mock.patch('lofar.triggerservices.voevent_decider.ALERTDecider') as sciencecheck: