MQE-1669: XML Comments outside of Test and AG

- Added check for node parent when converting XML comment to action

Author: KevinBKozan

src/Magento/FunctionalTestingFramework/Test/Config/Converter/Dom/Flat.php

@@ -18,6 +18,7 @@ class Flat implements ConverterInterface
     const REMOVE_KEY_ATTRIBUTE = 'keyForRemoval';
     const EXTENDS_ATTRIBUTE = 'extends';
     const TEST_HOOKS = ['before', 'after'];
+    const VALID_COMMENT_PARENT = ['test', 'before', 'after', 'actionGroup'];
 
     /**
      * Array node configuration.
@@ -124,7 +125,8 @@ public function convertXml(\DOMNode $source, $basePath = '')
             ) {
                 $value = $node->nodeValue;
                 break;
-            } elseif ($node->nodeType == XML_COMMENT_NODE) {
+            } elseif ($node->nodeType == XML_COMMENT_NODE &&
+                in_array($node->parentNode->nodeName, self::VALID_COMMENT_PARENT)) {
                 $uniqid = uniqid($node->nodeName);
                 $value[$uniqid] = [
                     'value' => trim($node->nodeValue),