Hide deprecated and duplicate attributes

some virtual attributes are not needed in reporting nor the api.
this allows attributes to work for our uses, but not put them into the
public api

this addresses issues like ManageIQ#18130

app/models/mixins/deprecation_mixin.rb

@@ -1,7 +1,16 @@
 module DeprecationMixin
  extend ActiveSupport::Concern
 
+ included do
+ catter :hidden_attributes
+ self.hidden_attributes = []
+ end
+
  module ClassMethods
+ def visible_attribute_names
+ attribute_names - hidden_attributes
+ end
+
  private
 
  def deprecate_belongs_to(old_belongs_to, new_belongs_to)
@@ -18,6 +27,7 @@ def deprecate_belongs_to(old_belongs_to, new_belongs_to)
  def deprecate_attribute(old_attribute, new_attribute)
  deprecate_attribute_methods(old_attribute, new_attribute)
  virtual_attribute(old_attribute, -> { type_for_attribute(new_attribute.to_s) })
+ hidden_attributes << old_attribute
  end
 
  def deprecate_attribute_methods(old_attribute, new_attribute)