Hide deprecated and duplicate attributes

Some virtual_attributes are not needed in reporting nor the api.
Some deprecated attributes should not be advertised for customers to start using.

This allows attributes to still work, but just not be advertised on our public apis (i.e.: report builder and rest api). This allows 

This fixes ManageIQ#18130
This enables ManageIQ#20532

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)