Fix IntegrationNotFound exception

[condemil]

When homekit device appears in the network home assistant starts to output the following errors:

2021-08-10 13:31:41 ERROR (MainThread) [homeassistant.config_entries] Cannot find integration homekit_controller
2021-08-10 13:31:41 ERROR (MainThread) [homeassistant] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/homeassistant-2021.6.3-py3.9.egg/homeassistant/config_entries.py", line 687, in async_create_flow
    integration = await loader.async_get_integration(self.hass, handler_key)
  File "/usr/lib/python3.9/site-packages/homeassistant-2021.6.3-py3.9.egg/homeassistant/loader.py", line 536, in async_get_integration
    integration = await _async_get_integration(hass, domain)
  File "/usr/lib/python3.9/site-packages/homeassistant-2021.6.3-py3.9.egg/homeassistant/loader.py", line 561, in _async_get_integration
    raise IntegrationNotFound(domain)
homeassistant.loader.IntegrationNotFound: Integration 'homekit_controller' not found.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/homeassistant-2021.6.3-py3.9.egg/homeassistant/data_entry_flow.py", line 153, in async_init
    flow, result = await task
  File "/usr/lib/python3.9/site-packages/homeassistant-2021.6.3-py3.9.egg/homeassistant/data_entry_flow.py", line 171, in _async_init
    flow = await self.async_create_flow(handler, context=context, data=data)
  File "/usr/lib/python3.9/site-packages/homeassistant-2021.6.3-py3.9.egg/homeassistant/config_entries.py", line 690, in async_create_flow
    raise data_entry_flow.UnknownHandler from err
homeassistant.data_entry_flow.UnknownHandler

How to reproduce

1. Add zeroconf: integration (if not already added) to configuration.yaml
2. Execute the following command from any machine in the network to send homekit multicast mdns message

avahi-publish -s Test _hap._tcp 12345 '["sh=eotXCg==" "ci=31" "sf=1" "s#=1" "pv=1.1" "md=TEST" "id=08:5A:0E:DF:63:6A" "ff=8" "c#=1"]'

3. Observe the error in the home assistant log file

[devbis]

Thanks! That's a great improvement. But it breaks existing autodiscovery for the components that are included. What if you just rename zeroconf addresses for disabled configurations and turn them back to enable some of them?

If could be like

# disabling all
sed -i 's/^    "_/    "_disabled_/' homeassistant/generated/zeroconf.py
# re-enable required ones
sed -i 's/_disabled_esphomelib./_esphomelib./' homeassistant/generated/zeroconf.py
sed -i 's/_disabled_ipps./_ipps./' homeassistant/generated/zeroconf.py
sed -i 's/_disabled_ipp./_ipp./' homeassistant/generated/zeroconf.py
sed -i 's/_disabled_printer./_printer./' homeassistant/generated/zeroconf.py
sed -i 's/_disabled_miio./_miio./' homeassistant/generated/zeroconf.py

What do you think?

[condemil]

Good idea, I added those changes.