Make sure multiple network check requests can run in parallel

[RemiBardon]

It seems there are unexpected behaviors with network checks:

@RemiBardon Unfortunately, I still sometimes get timeout on the configuration checkers (maybe 1/10 times)

But if I re try from the UI, I sometimes get the correct result again. Otherwise it feels like the server freezes

What can I do to reproduce? I start the Dashboard and then what do you click on?

I just try to quickly click on several things and change the toggle buttons etc and then come back to launch the checker (it’s a bit tedious)

I suspect some are cancelled by previous requests, we should investigate that. In any case, we should make sure logs are verbose when running locally so we can start identifying the root cause.