EBANX: Send original order id as merchant_payment_code metadata

Unit:
17 tests, 59 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed

Remote:
24 tests, 67 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed

All unit tests:
4503 tests, 71977 assertions, 0 failures, 0 errors, 0 pendings, 2 omissions, 0 notifications
100% passed

Closes #3637

CHANGELOG

@@ -14,6 +14,7 @@
 * CyberSource: Pass stored credentials with purchase [curiousepic] #3636
 * Mercado Pago: Add payment_method_option_id field [schwarzgeist] #3635
 * Stripe: Provide error when attempting an authorize with ACH [britth] #3633
+* EBANX: Send original order id as merchant_payment_code metadata [miguelxpn] #3637 
 
 == Version 1.107.3 (May 8, 2020)
 * Realex: Ignore IPv6 unsupported addresses [elfassy] #3622

lib/active_merchant/billing/gateways/ebanx.rb

@@ -212,6 +212,8 @@ def payment_details(payment)
       def add_additional_data(post, options)
         post[:device_id] = options[:device_id] if options[:device_id]
         post[:metadata] = options[:metadata] if options[:metadata]
+        post[:metadata] = {} if post[:metadata].nil?
+        post[:metadata][:merchant_payment_code] = options[:order_id] if options[:order_id]
       end
 
       def parse(body)