B2B-2081: Stabilize general tests along with S3 specific PR validation tests

Author: rganin

app/code/Magento/AwsS3/Test/Mftf/Test/AdminExportFilenameTimezoneTest.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/testSchema.xsd">
+    <test name="AdminExportFilenameTimezoneTest">
+        <!-- Verify that the file exists on remote storage -->
+        <helper class="Magento\AwsS3\Test\Mftf\Helper\FileAssertions"
+                method="assertFileExists"
+                stepKey="assertExportFileExists">
+            <argument name="filePath">{"local":"var/export/{$grabNameFile}","s3":"import_export/export/{$grabNameFile}"}</argument>
+        </helper>
+    </test>
+</tests>