Comment 22 for bug 1460222

I realize we've all glossed over Russell's comments from #6, but lets be clear: I agree with his sentiment. If the labels are being interpreted by the backend they are going to make things non-interopable because they will affect behavior differently based on what backend you have. If we all agree one of the core tenants of the Neutron API is portability between implementations, then using labels as defined here seems wrong.

Doug's comment in #10 around flavors is worth looking at. That's work we as a community have already committed to for Liberty.