Fixed dump using domains

The "domains" parameter was being set as the "locale" parameter for the RoutesResponse constructor. This meant that you couldn't dump routes using domains (the debug command worked though)

Command/DumpCommand.php

@@ -174,6 +174,7 @@ private function doDump(InputInterface $input, OutputInterface $output)
                 $extractor->getHost(),
                 $extractor->getPort(),
                 $extractor->getScheme(),
+                $input->getOption('locale'),
                 $domain
             ),
             'json',