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/device_tracker/test_asuswrt.py

@@ -17,7 +17,8 @@ from homeassistant.const import (CONF_PLATFORM, CONF_PASSWORD, CONF_USERNAME,
                                  CONF_HOST)
 
 from tests.common import (
-    get_test_home_assistant, get_test_config_dir, assert_setup_component)
+    get_test_home_assistant, get_test_config_dir, assert_setup_component,
+    mock_component)
 
 FAKEFILE = None
 
@@ -43,7 +44,7 @@ class TestComponentsDeviceTrackerASUSWRT(unittest.TestCase):
     def setup_method(self, _):
         """Setup things to be run when tests are started."""
         self.hass = get_test_home_assistant()
-        self.hass.config.components = set(['zone'])
+        mock_component(self.hass, 'zone')
 
     def teardown_method(self, _):
         """Stop everything that was started."""