Add config entries to connection class (#16618)

homeassistant/components/cast/__init__.py

homeassistant/components/config/config_entries.py

homeassistant/components/deconz/config_flow.py

homeassistant/components/hangouts/config_flow.py

homeassistant/components/homematicip_cloud/config_flow.py

homeassistant/components/hue/config_flow.py

homeassistant/components/ios/__init__.py

homeassistant/components/mqtt/config_flow.py

homeassistant/components/nest/config_flow.py

homeassistant/components/openuv/config_flow.py

homeassistant/components/sonos/__init__.py

homeassistant/components/zone/config_flow.py

homeassistant/config_entries.py

homeassistant/helpers/config_entry_flow.py

tests/common.py

tests/components/binary_sensor/test_deconz.py

tests/components/config/test_config_entries.py

tests/components/light/test_deconz.py

tests/components/light/test_hue.py

tests/components/scene/test_deconz.py