MAGETWO-90562: [Forwardport] Fix transaction level in integration tests framework

Author: slopukhov

dev/tests/integration/testsuite/Magento/Catalog/Model/Indexer/FlatTest.php

@@ -8,6 +8,7 @@
 use Magento\TestFramework\Helper\Bootstrap;
 
 /**
+ * @magentoAppIsolation enabled
  * @magentoDbIsolation enabled
  */
 class FlatTest extends \Magento\TestFramework\Indexer\TestCase

dev/tests/integration/testsuite/Magento/Catalog/Model/Indexer/Product/Eav/Action/FullTest.php

@@ -38,6 +38,7 @@ protected function setUp()
     }
 
     /**
+     * @magentoAppArea adminhtml
      * @magentoDbIsolation disabled
      * @magentoAppIsolation enabled
      * @magentoDataFixture Magento/Catalog/_files/product_simple.php
@@ -51,6 +52,11 @@ public function testReindexAll()
 
         $this->assertTrue($attr->isIndexable());
 
+        $priceIndexerProcessor = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->get(
+            \Magento\Catalog\Model\Indexer\Product\Price\Processor::class
+        );
+        $priceIndexerProcessor->reindexAll();
+
         $this->_processor->reindexAll();
 
         $categoryFactory = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->get(