Support for August doorbell (#11124)

* Add support for August doorbell

* Address PR comment for August platform

* Address PR comment for August binary sensor

* Address PR comment for August camera

* Addressed PR comment for August lock

* - Fixed houndci-bot error

* - Updated configurator description

* - Fixed stale docstring

* Added august module to .coveragerc

homeassistant/components/lock/august.py

@@ -0,0 +1,82 @@
+"""
+Support for August lock.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/lock.august/
+"""
+from datetime import timedelta
+
+from homeassistant.components.august import DATA_AUGUST
+from homeassistant.components.lock import LockDevice
+from homeassistant.const import ATTR_BATTERY_LEVEL
+
+DEPENDENCIES = ['august']
+
+SCAN_INTERVAL = timedelta(seconds=5)
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Set up August locks."""
+    data = hass.data[DATA_AUGUST]
+    devices = []
+
+    for lock in data.locks:
+        devices.append(AugustLock(data, lock))
+
+    add_devices(devices, True)
+
+
+class AugustLock(LockDevice):
+    """Representation of an August lock."""
+
+    def __init__(self, data, lock):
+        """Initialize the lock."""
+        self._data = data
+        self._lock = lock
+        self._lock_status = None
+        self._lock_detail = None
+        self._changed_by = None
+
+    def lock(self, **kwargs):
+        """Lock the device."""
+        self._data.lock(self._lock.device_id)
+
+    def unlock(self, **kwargs):
+        """Unlock the device."""
+        self._data.unlock(self._lock.device_id)
+
+    def update(self):
+        """Get the latest state of the sensor."""
+        self._lock_status = self._data.get_lock_status(self._lock.device_id)
+        self._lock_detail = self._data.get_lock_detail(self._lock.device_id)
+
+        from august.activity import ActivityType
+        activity = self._data.get_latest_device_activity(
+            self._lock.device_id,
+            ActivityType.LOCK_OPERATION)
+
+        if activity is not None:
+            self._changed_by = activity.operated_by
+
+    @property
+    def name(self):
+        """Return the name of this device."""
+        return self._lock.device_name
+
+    @property
+    def is_locked(self):
+        """Return true if device is on."""
+        from august.lock import LockStatus
+        return self._lock_status is LockStatus.LOCKED
+
+    @property
+    def changed_by(self):
+        """Last change triggered by."""
+        return self._changed_by
+
+    @property
+    def device_state_attributes(self):
+        """Return the device specific state attributes."""
+        return {
+            ATTR_BATTERY_LEVEL: self._lock_detail.battery_level,
+        }