Allow create index on system versioning columns row_start and row_end

MariaDB [tdb]> alter table test_versioning ADD SYSTEM VERSIONING;

MariaDB [tdb]> alter table test_versioning add index rs_re_index(row_start,row_end);

ERROR 1072 (42000): Key column 'row_start' doesn't exist in table

MariaDB [tdb]>