Ticket 47376 - DESC should not be empty as per RFC 2252 (ldapv3)
    
    Bug Description:  RFC 2252 (ldapv3), DESC, defined as a qdstring, should not
                      be an empty string.  In the standard schema there are
                      several attributes/objectclasses that have " DESC '' ",
                      which violates the RFC.
    
    Fix Description:  Set all empty DESC's with values.
    
    https://fedorahosted.org/389/ticket/47376
    
    Reviewed by: richm & nkinder (Thanks!!)
    (cherry picked from commit 9f73f01a408cef05f112f4ec406949f3d48afe78)
    (cherry picked from commit 4a29fe1a3fae5a81007c7dec126f48baa03948e0)
    (cherry picked from commit f7fa6b1b952847137424a42758681a59b3bd8df2)