Bug when adding nested route doesn't honour the initial 'controller' namespace

[Paul Williams]

  # Attach nested routes to an existing route
  my $attach = $r->any('/attach')->under->to('attach#authenticate');
  $self->restify->routes(
    $attach,
    {'global-users' => {'roles' => undef}},
    {controller     => 'attach'}
  );

In the example above, the attach controller is not used as the initial controller namespace. So Mojo was trying to access MyApp::GlobalUsers::Roles instead of MyApp::Attach::GlobalUsers::Roles.