## Description:
More fixes flagged by pylint 2 that don't hurt to have before the actual pylint 2 upgrade (which I'll submit soon).
## Checklist:
- [ ] The code change is tested and works locally.
- [x] Local tests pass with `tox`. **Your PR cannot be merged unless tests pass**
* Add discovery support to mqtt climate component.
* - Fix flake8 error (./homeassistant/components/climate/mqtt.py:130:1: D202 No blank lines allowed after function docstring)
- Fix test error (since climate component was expected not to work - changed it to "lock" component, which also does not have MQTT discovery support yet)
* Fix old assert statement to reflect new lock component usage
* Change invalid MQTT discovery component type from 'lock' to 'timer', since contrary to the documentation the lock component is properly supported when using MQTT discovery.
* Make configuration of invalid MQTT config component a single point of entry to prevent missing the assertion later in the code when changing.
* Add new testcases to cover not-yet-covered code paths in https://github.com/home-assistant/home-assistant/blob/dev/homeassistant/components/climate/mqtt.py
* Enable autodiscovery for mqtt cameras, BREAKING CHANGE: homogenisation topic->state_topic
* fix line too long
* fix topic->state_topic in test
* image shall not be the state of entity
* phue -> aiohue
* Clean up
* Fix config
* Address comments
* Typo
* Fix rebase error
* Mark light as unavailable when bridge is disconnected
* Tests
* Make Throttle work with double delay and async
* Rework update logic
* Don't resolve host to IP
* Clarify comment
* No longer do unnecessary updates
* Add more doc
* Another comment update
* Wrap up tests
* Lint
* Fix tests
* PyLint does not like mix 'n match async and coroutine
* Lint
* Update aiohue to 1.2
* Lint
* Fix await MagicMock
* MQTT Typing
* Tiny style change
* Fixes
I should've probably really sticked to limiting myself to static typing...
* Small fix 😩
Ok, this seriously shouldn't have happened.
* Fix MQTT retained message not being re-dispatched
* Fix tests
* Use paho-mqtt for retained messages
* Improve code style
* Store list of subscribers
* Fix lint error
* Adhere to Home Assistant's logging standard
"Try to avoid brackets and additional quotes around the output to make it easier for users to parse the log."
- https://home-assistant.io/developers/development_guidelines/
* Add reconnect tests
* Fix lint error
* Introduce Subscription
Tests still need to be updated
* Use namedtuple for MQTT messages
... And fix issues
Accessing the config manually at runtime isn't ideal
* Fix MQTT __init__.py tests
* Updated usage of Mocks
* Moved tests that were testing subscriptions out of the MQTTComponent test, because of how mock.patch was used
* Adjusted the remaining tests for the MQTT clients new behavior - e.g. self.progress was removed
* Updated the async_fire_mqtt_message helper
* ✅ Update MQTT tests
* Re-introduce the MQTT subscriptions through the dispatcher for tests - quite ugly though... 🚧
* Update fixtures to use our new MQTT mock 🎨
* 📝 Update base code according to comments
* 🔨 Adjust MQTT test base
* 🔨 Update other MQTT tests
* 🍎 Fix carriage return in source files
Apparently test_mqtt_json.py and test_mqtt_template.py were written on Windows. In order to not mess up the diff, I'll just redo the carriage return.
* 🎨 Remove unused import
* 📝 Remove fire_mqtt_client_message
* 🐛 Fix using python 3.6 method
What's very interesting is that 3.4 didn't fail on travis...
* 🐛 Fix using assert directly
* Lazy loading of service descriptions
* Fix tests
* Load YAML in executor
* Return a copy of available services to allow mutations
* Remove lint
* Add zha/services.yaml
* Only cache descriptions for known services
* Remove lint
* Remove description loading during service registration
* Remove description parameter from async_register
* Test async_get_all_descriptions
* Remove lint
* Fix typos from multi-edit
* Remove unused arguments
* Remove unused import os
* Remove unused import os, part 2
* Remove unneeded coroutine decorator
* Only use executor for loading files
* Cleanups suggested in review
* Increase test coverage
* Fix races in existing tests