Annotations : array of roles and permissions

```php
namespace Acme\DemoBundle;

class FooRole 
{
    const EDIT = 'ROLE_ACME_DEMO_FOO_EDIT';
    const DELETE = 'ROLE_ACME_DEMO_FOO_DELETE';
}
```

```php
namespace Acme\DemoBundle\Controller;
use Acme\DemoBundle\FooRole;

class FooController
{
    
    /**
     * @Secure(roles={FooRole::EDIT, 'ROLE_ADMIN'})
     */
    public function editAction()
    {
        //...
    }
    
    /**
     * @Secure(roles={FooRole::DELETE, 'ROLE_ADMIN'})
     */
    public function deleteAction()
    {
        //...
    }
    
}
```