Discount Percentages should be divided by 100 before sending to Signifyd

[pshaver]

Salesforce-Commerce-Cloud/link/cartridges/int_signifyd/cartridge/scripts/service/signifyd.js

Line 300 in 820e5ae

discountPercentage = discount.getPercentage();

The API expects a number between 0 and 1 where a 20% discount would be presented as 0.2