ACPT-1490: Covered customer with multiselect attribute json import with web-api test

Author: yaroslavGoncharuk

dev/tests/integration/testsuite/Magento/Customer/_files/import_export/customers_rollback.php

@@ -21,17 +21,29 @@
 /** @var $customer Customer */
 $customer = $objectManager->create(Customer::class);
 
-$emailsToDelete = [
+$customersToRemove = [
     'customer@example.com',
     'julie.worrell@example.com',
     'david.lamar@example.com',
 ];
-foreach ($emailsToDelete as $email) {
+
+/**
+ * @var Magento\Customer\Api\CustomerRepositoryInterface
+ */
+$customerRepository = $objectManager->create(\Magento\Customer\Api\CustomerRepositoryInterface::class);
+
+foreach ($customersToRemove as $customerEmail) {
     try {
-        $customer->loadByEmail($email)->delete();
-    } catch (\Exception $e) {
+        $customer = $customerRepository->get($customerEmail);
+        $customerRepository->delete($customer);
+    } catch (\Magento\Framework\Exception\NoSuchEntityException $exception) {
+        /**
+         * Tests which are wrapped with MySQL transaction clear all data by transaction rollback.
+         */
+        continue;
     }
 }
+
 $registry->unregister('isSecureArea');
 $registry->register('isSecureArea', false);
 $registry->unregister('_fixture/Magento_ImportExport_Customer_Collection');