TT#56376 selenium: add controller_header.t to default test plan

controller_header.t:
- added to default test plan

Change-Id: I497cefbd67230a28ccb26ddb1410e9df4fa29c45

t/selenium/runner.t

@@ -30,6 +30,7 @@ if($testplan eq $dir . 'runner.t') {
         $dir . 'controller_customer.t',
         $dir . 'controller_domain.t',
         $dir . 'controller_emergency.t',
+        $dir . 'controller_header.t',
         $dir . 'controller_invoice.t',
         $dir . 'controller_ncos.t',
         $dir . 'controller_other.t',