Ticket 50004 - lib389 - improve X-ORIGIN schema parsing
    
    Bug Description: Schema parsing assumed X-ORIGIN was always in this
                     format "X-ORIGIN '", but it can also be in other
                     formats like: "X-ORIGIN (".  So when it did not contain
                     the original format we got list index errors.
    
    Fix Description: Loosen the format to " X-ORIGIN " which all the formats.
    
                     Also:
                         improve from UI schema error messages
                         updated create_test for python3
    
    https://pagure.io/389-ds-base/issue/50004
    
    Reviewed by: firstyear & spichugi(Thanks!!)