Use the host' and port' directives when using a zend adapter in DbTool

fixes #7781
fixes #7798

modules/setup/library/Setup/Utils/DbTool.php

@@ -246,6 +246,8 @@ class DbTool
 
         $config = array(
             'dbname'    => $dbname,
+            'host'      => $this->config['host'],
+            'port'      => $this->config['port'],
             'username'  => $this->config['username'],
             'password'  => $this->config['password']
         );