ReadTransformedResourceOperation should set include-defaults=false when calling read-resource

This needs further investigation, but it seems to mean that we have a lot of ModelFixers used in the wrong situation. i.e. the when transforming resources, attributes that should be undefined reach the transformers as defined with the default value set instead.

This needs a bit of thinking about jmesnil1@redhat.com mentioned this a few weeks ago as well. I'd like to see if he remembers before fixing