TestSingleAffinities never expected a node with affinity score set to 0 in
the set of returned nodes. However, since #25800, this can happen. What the
test should be checking for instead is that the node with the highest normalized
score has the right affinity.
* Adds a constraint to prevent tests from landing on Windows
* Improve Terraform output for mixed windows/linux clients
* Makes some Windows client config fixes from 0.10.2 testing
