Bug 522055 - Scope check for managed attribute fails
    
    When using the linked attribute plug-in, an entry that is renamed
    that is outside of the scope of the plug-in will cause the forward
    links in other entries to be updated if they contain a managed
    attribute type.
    
    We need to check if the new DN of the renamed entry is within the
    scope of the configured linked attributes before updating forward
    links.