[update-config] Only remove items which are not in the downloaded configuration

[okraits]

No description provided.

[nemesifier]

@okraits great! 👍

Seems there's already an automated test for this feature, do you confirm?

Have you tried compiling this branch testing it on some device?

I'll need to do that as well but I guess I can do so next week.

[okraits]

@nemesisdesign Thank you 😃 I think that test_update_config.lua and possibly test_remove_default_wifi.lua are the relevant tests here. I ran the tests successfully.

I didn't build the package but I tested the changed file on a device. Looks good.

I think the next step will be to work on #72.

[nemesifier]

Great, does this patch help fixing #69?

[okraits]

Yes, it fixes #69. I did several tests and always examined the configuration before and after the tests. A section now won't be removed if it is included in the new, downloaded configuration and thus its position doesn't change.

[nemesifier]

That's great news!

[nemesifier]

👍