Ticket 551 - Multivalued rootdn-days-allowed in RootDN Access Control plugin always results in access control violation
    
    Bug Description:  The server allows you to add multiple rootdn-days-allowed attributes.
    
    Fix Description:  The attribute needs to be single valued.  Added rootdn plugin attributes
                      to schema, and improved dse schema checking at server startupi & setup.
    
    https://fedorahosted.org/389/ticket/551
    
    Reviewed by: Noriko(Thanks!)