Add acts_as_list scope to Spree::Variant
Add acts_as_list scope to Spree::Variant

Scope to Spree::Product.

Fixes #6375

azclick/spree,keatonrow/spree,azclick/spree,azclick/spree,keatonrow/spree,keatonrow/spree,keatonrow/spree,azclick/spree