Ticket 632 - 389-ds-base cannot handle Kerberos tickets with PAC
    
            Bug Description:  When FreeIPA is configured with AD trust support, Kerberos
                              tickets may also contain PAC which makes them bigger than
                              usually expected (bigger than 2048 B)
    
            Fix Description:  Make the default 64k(65536), and allow it to be configurable
                              using: nsslapd-sasl-max-buffer-size
    
            https://fedorahosted.org/389/ticket/632
    
            Reviewed by: nkinder(Thanks!)