Host setting not respected

[CGamesPlay]

• aiohttp-devtools version: 1.0.post0
• aiohttp version: 3.8.4
• python version: 3.9.6
• Platform: macOS

Issue Summary

The documented host setting is not respected, and instead the app always binds to IPv4 0.0.0.0 only.

Steps to reproduce

1. Create test.py with the example server from https://docs.aiohttp.org/en/stable/web_quickstart.html#run-a-simple-web-server
2. Run adev runserver test.py -p 4000 --host "192.168.2.6" or with whatever appropriate IP you like.
3. In another terminal, run netstat -ant | grep 4000

Adev sends us mixed messages about the setting working:

$ adev runserver test.py -p 4000 --host "192.168.2.6"
[08:27:11] Starting aux server at http://192.168.2.6:4001 ◆
[08:27:11] Starting dev server at http://192.168.2.6:4000 ●
======== Running on http://0.0.0.0:4001 ========
(Press CTRL+C to quit)

But the truth is that it only listened on IPv4 0.0.0.0:

$ netstat -ant | grep 4000
tcp4       0      0  *.4000                 *.*                    LISTEN

[Dreamsorcerer]

Please check for duplicates first, there are literally only 4 open issues...
#449

[CGamesPlay]

Sorry about that! Thanks for the quick response.