List entity_ids in config and only react to them (#2144)

* List entity_ids in config and only react to them

This allows us to define a list of entity_ids in the config to make the
template sensor, binary sensor and switch only react to state changes of
these entities instead of listening to all state changes.

* Forgot to import the track_state_change function

* Changed test for added entity_ids to config

* Use default MATCH_ALL and remove event_listener

tests/components/binary_sensor/test_template.py

@@ -29,7 +29,7 @@ class TestBinarySensorTemplate(unittest.TestCase):
         result = template.setup_platform(hass, config, add_devices)
         self.assertTrue(result)
         mock_template.assert_called_once_with(hass, 'test', 'virtual thingy',
-                                              'motion', '{{ foo }}')
+                                              'motion', '{{ foo }}', None)
         add_devices.assert_called_once_with([mock_template.return_value])
 
     def test_setup_no_sensors(self):
@@ -77,7 +77,7 @@ class TestBinarySensorTemplate(unittest.TestCase):
         """"Test the attributes."""
         hass = mock.MagicMock()
         vs = template.BinarySensorTemplate(hass, 'parent', 'Parent',
-                                           'motion', '{{ 1 > 1 }}')
+                                           'motion', '{{ 1 > 1 }}', None)
         self.assertFalse(vs.should_poll)
         self.assertEqual('motion', vs.sensor_class)
         self.assertEqual('Parent', vs.name)
@@ -93,7 +93,7 @@ class TestBinarySensorTemplate(unittest.TestCase):
         """"Test the event."""
         hass = get_test_home_assistant()
         vs = template.BinarySensorTemplate(hass, 'parent', 'Parent',
-                                           'motion', '{{ 1 > 1 }}')
+                                           'motion', '{{ 1 > 1 }}', None)
         vs.update_ha_state()
         hass.pool.block_till_done()
 
@@ -110,7 +110,7 @@ class TestBinarySensorTemplate(unittest.TestCase):
         """"Test the template update error."""
         hass = mock.MagicMock()
         vs = template.BinarySensorTemplate(hass, 'parent', 'Parent',
-                                           'motion', '{{ 1 > 1 }}')
+                                           'motion', '{{ 1 > 1 }}', None)
         mock_render.side_effect = TemplateError('foo')
         vs.update()
         mock_render.side_effect = TemplateError(