Testing (Scenario): `check_cloudspec_consistency` can be removed

[reneradoi]

In check_cloudspec_consistency, Scenario complains if the cloud spec's type is set to kubernetes. This is no longer relevant as the cloud spec type is now also reported on kubernetes models.

[tonyandrewmeyer]

Thanks @reneradoi ! We indeed missing changing this, even though Charm Tech contributed that change to Juju! (We did update the docs).

The only question here is whether we remove it or add in a version check.

[reneradoi]

Thank you for the quick response @tonyandrewmeyer! I think adding a version check would be a bit more sensitive, but I don't have any strong opinions on it and would leave it up to you.