AC-8767::ES 7 deprecation and ES 8 upgrade

Author: glo71317

app/code/Magento/Elasticsearch/ElasticAdapter/Model/Adapter/FieldMapper/Product/FieldProvider/FieldType/Converter.php

@@ -38,7 +38,7 @@ class Converter implements ConverterInterface
     ];
 
     /**
-     * Get service field type for elasticsearch 5.
+     * Get service field type for elasticsearch.
      *
      * @param string $internalType
      * @return string

app/code/Magento/Elasticsearch/Test/Unit/ElasticAdapter/SearchAdapter/Aggregation/IntervalTest.php renamed to app/code/Magento/Elasticsearch7/Test/Unit/Model/SearchAdapter/Aggregation/IntervalTest.php

@@ -5,7 +5,7 @@
  */
 declare(strict_types=1);
 
-namespace Magento\Elasticsearch\Test\Unit\ElasticAdapter\SearchAdapter\Aggregation;
+namespace Magento\Elasticsearch7\Test\Unit\Model\SearchAdapter\Aggregation;
 
 use Magento\Customer\Model\Session as CustomerSession;
 use Magento\Elasticsearch7\Model\Client\Elasticsearch as ElasticsearchClient;