Ticket #48366 - proxyauth does not work bound as directory manager
    
    Description: when binding as directory manager always full access is granted, even if a proxyauthzid is presnt
    
    Fix: when evaluating if access control can be skipped check for proxy auth
    
    Ticket:  https://fedorahosted.org/389/ticket/48366
    
    Reviewed by: Noriko, Thanks