Changes to List discounts

api operation id getList removed and replaced with 8a7522da8d0dce71e662a064b768d32c

the endpoint scheme security passport was added to the API

added the media type application/json for the response with the status 200

added the media type application/json for the response with the status 401

added the media type application/json for the response with the status 403

added the non-success response with the status 500