VPS non-unique names result in misleading TF-state

[JoooostB]

When creating a new VPS with the same name as one that already exists in your account, TransIP's API returns the unique-ID of the pre-existing VPS instead of the newly created one. This results in a terraform.tfstate that contains the ID of the old VPS. When doing new changes, you'll be modifying the wrong VPS.

[aequitas]

As discussed privately, I'll look into this to see if there is logic that needs to be adjusten on our side. I'll also write a testcase that will verify this situation.