Allow a "not" mode for filters
We have a dev cluster set up and working with octopus.
One of the hurdles to creating ephemeral/adhoc debug/testing environments at the moment is the fact that we have to go in and manually map those environments in lots of different places.
Ideally, we'd be able to create a resource (e.g. a kubernetes cluster, certificate, etc), that lets us specify that it is a valid resource for ALL environments EXCEPT production.