Fixes #7953: add product/repositories list for an erratum.

Display a list of products/repositories that an erratum is in.

http://projects.theforeman.org/issues/7953
The UI here is passing in an array, which won't work with a :term filter.  You need to use :terms.  If you're going to support an array, you need to ensure that params[:content_view_version_id] is actually an array and wrap it if not.