ACP2E-2102: No Export VCL for Varnish 7 button in admin panel

- changes requested to CR

Author: o-dubovyk

app/code/Magento/PageCache/Block/System/Config/Form/Field/Export/Varnish7.php

@@ -7,9 +7,6 @@
 
 namespace Magento\PageCache\Block\System\Config\Form\Field\Export;
 
-/**
- * Class Export
- */
 class Varnish7 extends \Magento\PageCache\Block\System\Config\Form\Field\Export
 {
     /**

app/code/Magento/PageCache/Model/Varnish/VclTemplateLocator.php

@@ -10,6 +10,7 @@
 use Magento\Framework\Module\Dir;
 use Magento\Framework\Module\Dir\Reader;
 use Magento\Framework\Filesystem\Directory\ReadFactory;
+use Magento\PageCache\Model\Config;
 use Magento\PageCache\Model\VclTemplateLocatorInterface;
 use Magento\PageCache\Exception\UnsupportedVarnishVersion;
 
@@ -18,11 +19,6 @@
  */
 class VclTemplateLocator implements VclTemplateLocatorInterface
 {
-    /**
-     * XML path to Varnish 7 config template path
-     */
-    public const VARNISH_7_CONFIGURATION_PATH = 'system/full_page_cache/varnish7/path';
-
     /**
      * XML path to Varnish 6 config template path
      */
@@ -65,7 +61,7 @@ class VclTemplateLocator implements VclTemplateLocatorInterface
         self::VARNISH_SUPPORTED_VERSION_4 => self::VARNISH_4_CONFIGURATION_PATH,
         self::VARNISH_SUPPORTED_VERSION_5 => self::VARNISH_5_CONFIGURATION_PATH,
         self::VARNISH_SUPPORTED_VERSION_6 => self::VARNISH_6_CONFIGURATION_PATH,
-        self::VARNISH_SUPPORTED_VERSION_7 => self::VARNISH_7_CONFIGURATION_PATH,
+        self::VARNISH_SUPPORTED_VERSION_7 => Config::VARNISH_7_CONFIGURATION_PATH,
     ];
 
     /**

dev/tests/integration/testsuite/Magento/PageCache/Model/Varnish/VclGeneratorTest.php

@@ -26,8 +26,11 @@ public function setUp(): void
         $vclGeneratorParams = [
             'backendHost' => 'example.com',
             'backendPort' => '8080',
-            'accessList' =>  explode(',', '127.0.0.1,192.168.0.1,127.0.0.2'),
-            'designExceptions' => json_decode('{"_":{"regexp":"\/firefox\/i","value":"Magento\/blank"}}', true),
+            'accessList' => ['127.0.0.1', '192.168.0.1', '127.0.0.2'],
+            'designExceptions' => ['_' => [
+                'regexp' => '/firefox/i',
+                'value' => 'Magento/blank'
+            ]],
             'sslOffloadedHeader' => 'X-Forwarded-Proto',
             'gracePeriod' => 1234
         ];