add: product channel percent

app/service/gjj/product.js

@@ -481,6 +481,7 @@ class ProductService extends Service {
         abridge_desc: v.abridge_desc,
         front_image: v.front_image,
         back_image: v.back_image,
+        percent: v.percent ? v.percent : '0',
       };
       if (!ctx.isEmpty(v.partner_alias)) {
         tmp.partner = v.partner_alias;