MTA-3971: Add variation for Checkout with Braintree Credit Card with specific allowed credit card types per country

- fixed dataset

Author: rliukshyn

dev/tests/functional/lib/Magento/Mtf/App/State/State1.php

@@ -39,11 +39,14 @@ class State1 extends AbstractState
     /**
      * @param ObjectManager $objectManager
      * @param CurlTransport $curlTransport
+     * @param array $arguments
      */
     public function __construct(
         ObjectManager $objectManager,
-        CurlTransport $curlTransport
+        CurlTransport $curlTransport,
+        array $arguments
     ) {
+        parent::__construct($objectManager, $arguments);
         $this->objectManager = $objectManager;
         $this->curlTransport = $curlTransport;
     }

dev/tests/functional/tests/app/Magento/Braintree/Test/Repository/ConfigData.xml

@@ -410,15 +410,15 @@
             <field name="payment/braintree/countrycreditcard" xsi:type="array">
                 <item name="scope" xsi:type="string">payment</item>
                 <item name="scope_id" xsi:type="number">1</item>
-                <item name="value" xsi:type="string">a:2:{s:2:"US";a:1:{i:0;s:2:"MC";}s:2:"GB";a:1:{i:0;s:2:"VI";}}</item>
+                <item name="value" xsi:type="string">{"GB":["VI"],"US":["MC"]}</item>
             </field>
         </dataset>
 
         <dataset name="braintree_countrycreditcard_US_MS_GB_VI_rollback">
             <field name="payment/braintree/countrycreditcard" xsi:type="array">
                 <item name="scope" xsi:type="string">payment</item>
                 <item name="scope_id" xsi:type="number">1</item>
-                <item name="value" xsi:type="string">a:0:{}</item>
+                <item name="value" xsi:type="string">[]</item>
             </field>
         </dataset>
     </repository>