* Add CONF_LOCATION constant
* Update all custom CONF_LOCATION definitions to point to constant
* remove CONF_LOCATION from homeassistant/components/totalconnect/const
* Add config flow to pi-hole
* Add config flow tests
* Change PlatformNotReady to ConfigEntryNotReady
* Improve config flow
* Add @shenxn as codeowner
* Use entity_id as unique id
* Remove .get with [] for required fields
* Remove unique id from config flow
* Replace some strings with references
* Fix api_key string
* Fix service api_key check
* Remove unused DuplicatedNameException
* Update configuration schema to support multiple Pi-holes
* Construct sensors for each configured Pi-hole
* Ensure each Pi-hole has a unique name
* Update services to handle multiple Pi-holes
* Update tests for multiple configurations
* Refactor tests to support service testing
* Fix else-raise per pyliunt
* Per code review, add all entities in a single call
* Per code review, add the default name as default.
* Per code review, add cv.ensure_list to prevent breaking change
* Per code review, move name validation to schema
* Remove default name
* Per code review, validate api_key in schema definition
* Per code review, rename variables
* Per code review, use list comprehension
* Ensure unique slug names in config validation
* Per code review, refactor to CoroutineMock
* Fix adding sensor entities
* Per code review, refactor mock function creation
* Per code review, refactor mock function return values
* Adds tests for pi_hole integration
* Refactor pi_hole component to an integration supporting multiple platforms
* Adds mock of Hole dependency
* Aborts platform setup when discovery_info is none
* Removes use of monitored_conditions
* Adds integration setup test
* Removes PlatformNotReady check
* Adds sensor test
* Code review updates
* Refactor tests to assert state through hass
* Reorder imports
