Bootstrap / Component setup async (#6264)

* Bootstrap / Entiy setup async

* Cleanup add_job stuff / return task/future object

* Address paulus comments / part 1

* fix install pip

* Cleanup bootstrap / move config stuff to config.py

* Make demo async

* Further bootstrap improvement

* Address Martin's comments

* Fix initial tests

* Fix final tests

* Fix bug with prepare loader

* Remove no longer needed things

* Log error when invalid config

* More cleanup

* Cleanups platform events & fix lint

* Use a non blocking add_entities callback for platform

* Fix Autoamtion is setup befor entity is ready

* Better automation fix

* Address paulus comments

* Typo

* fix lint

* rename functions

* fix tests

* fix test

* change exceptions

* fix spell

tests/components/binary_sensor/test_mqtt.py

@@ -3,10 +3,10 @@ import unittest
 
 from homeassistant.bootstrap import setup_component
 import homeassistant.components.binary_sensor as binary_sensor
-from tests.common import mock_mqtt_component, fire_mqtt_message
 from homeassistant.const import (STATE_OFF, STATE_ON)
 
-from tests.common import get_test_home_assistant
+from tests.common import (
+    get_test_home_assistant, mock_mqtt_component, fire_mqtt_message)
 
 
 class TestSensorMQTT(unittest.TestCase):
@@ -23,7 +23,6 @@ class TestSensorMQTT(unittest.TestCase):
 
     def test_setting_sensor_value_via_mqtt_message(self):
         """Test the setting of the value via MQTT."""
-        self.hass.config.components = set(['mqtt'])
         assert setup_component(self.hass, binary_sensor.DOMAIN, {
             binary_sensor.DOMAIN: {
                 'platform': 'mqtt',
@@ -49,7 +48,6 @@ class TestSensorMQTT(unittest.TestCase):
 
     def test_valid_device_class(self):
         """Test the setting of a valid sensor class."""
-        self.hass.config.components = set(['mqtt'])
         assert setup_component(self.hass, binary_sensor.DOMAIN, {
             binary_sensor.DOMAIN: {
                 'platform': 'mqtt',
@@ -64,7 +62,6 @@ class TestSensorMQTT(unittest.TestCase):
 
     def test_invalid_device_class(self):
         """Test the setting of an invalid sensor class."""
-        self.hass.config.components = set(['mqtt'])
         assert setup_component(self.hass, binary_sensor.DOMAIN, {
             binary_sensor.DOMAIN: {
                 'platform': 'mqtt',