* Remove unnecessary exception re-wraps
* Preserve exception chains on re-raise
We slap "from cause" to almost all possible cases here. In some cases it
could conceivably be better to do "from None" if we really want to hide
the cause. However those should be in the minority, and "from cause"
should be an improvement over the corresponding raise without a "from"
in all cases anyway.
The only case where we raise from None here is in plex, where the
exception for an original invalid SSL cert is not the root cause for
failure to validate a newly fetched one.
Follow local convention on exception variable names if there is a
consistent one, otherwise `err` to match with majority of codebase.
* Fix mistaken re-wrap in homematicip_cloud/hap.py
Missed the difference between HmipConnectionError and
HmipcConnectionError.
* Do not hide original error on plex new cert validation error
Original is not the cause for the new one, but showing old in the
traceback is useful nevertheless.
* 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
* Add yamllint (in pre-commit and CI)
* Fix linting for all YAML files
* Bump and add it to requirements
* Fix gen_requirements for pre-commit, remove 'v' from version
* 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
