Add a basic host check

[nelsonkopliku]

For demo purposes.

[coveralls]

coverage: 96.477%. remained the same when pulling 4677582 on add-demo-host-check into 1f80bf4 on main.

[EMaksy]

Hey the check by itself is great!
For development this will be very useful, we may still need to discuss if want to mix real checks with fake checks.
So code wise LGTM, let's hear what the rest thinks about including it or not :D

[abravosuse]

From the understanding I have about the check yaml, this looks good to me Nelson...

[dottorblaster]

I'd rather not mix fake and real checks.

[nelsonkopliku]

I'd rather not mix fake and real checks.

I promise I will delete it as soon as we have a real host check.

Think of it as as a basic noop or something like that 😅

[arbulu89]

I'm with @dottorblaster on this.
Why do we need to push this fake check?
Just to have the demo web updated? I though that the checks in the frontend would be disabled as we do with ascs/ers cluster types, with some sort of Coming next banner. Until we have something "real" to deliver

[nelsonkopliku]

Yes, we'll have the coming soon communication.

Nevertheless before adding the coming soon, we'll deliver a working feature that might be interesting testing.

If we don't like this I can ditch it. It will be just a bit more cumbersome testing host checks without the support of an engineer.

No hard feelings 😄