* tests for product types for 3.1
* updated stories
* chage test cases names for product types
* add test for setting attribute as variant selection in product type
* add test for setting attribute as variant selection in product type
* split product types spec file
* uncomment purchase with product types test
* Update cypress/integration/configuration/productTypes/attributesInProduductTypes.js
Co-authored-by: Ewa Czerniak <ewa.czerniak@saleor.io>
Co-authored-by: Ewa Czerniak <ewa.czerniak@saleor.io>