MAGETWO-65532: Update \Magento\Vault\Setup\UpgradeData to use JSON format

- Add unit test to restricted class exclusions to resolve build failure

Author: tjwiebell

dev/tests/static/testsuite/Magento/Test/Legacy/_files/restricted_classes.php

@@ -118,6 +118,11 @@
                 'name' => 'Magento_Sales',
                 'path' => 'Test/Unit/Setup/SerializedDataConverterTest.php'
             ],
+            [
+                'type' => 'module',
+                'name' => 'Magento_Sales',
+                'path' => 'Test/Unit/Setup/SalesOrderPaymentDataConverterTest.php'
+            ],
             [
                 'type' => 'library',
                 'name' => 'magento/framework',