MDL-58250 behat: Status should be new exit code

Oring should not be done with old status,
as it will always return failure.

admin/tool/behat/cli/run.php

@@ -325,6 +325,7 @@ if ($verbose || $status) {
         }
 
         // Update status after auto-rerun finished.
+        $status = 0;
         foreach ($exitcodes as $name => $exitcode) {
             if ($exitcode) {
                 if (!empty($parallelrun)) {