* Allow only_cache parameter in zha.safe_read()
* Use cache_only for binary_sensor.zha initial update.
* Use cache_only for fan.zha initial update.
* Use cache_only for sensor.zha initial update.
* Use cache_only for switch.zha initial update.
* Use cache_only for light.zha initial update.
* Refactor cached only read in zha platform.