Fix issue with private flavors not being visible on refresh

https://bugzilla.redhat.com/show_bug.cgi?id=1117972

@chessbyte Please review.
Rubycop warning on this seems legit.  Also, perhaps something can be refactored so that both `get_private_flavor` and  get_flavors` get the list of flavors and call something like `process_flavor_collection` or `process_flavors`.