Bug 1546859 add requestSecurityCode member to BasicCardRequest r=baku

the requestSecurityCode allows merchants to opt out of requiring a CVV from a credit card.

Differential Revision: https://phabricator.services.mozilla.com/D28777

--HG--
extra : moz-landing-system : lando

dom/webidl/BasicCardPayment.webidl

@@ -9,6 +9,7 @@
 
 dictionary BasicCardRequest {
   sequence<DOMString> supportedNetworks = [];
+  boolean requestSecurityCode = true;
 };
 
 dictionary BasicCardResponse {