update now time in dup_table's get_gts function

implement preserve order for pagination

bugfix: user variables + shared expressions may cause a coredump

revert code: the code with and without this commit will cause differe…

…nces in the partition mapping rules

revert code: the code with and without this commit will cause differe…

…nces in the partition mapping rules

fix license header in gmock

[CP]fix standby tenant max_ls_id not match during upgrade

[CP] fix: rs do_restart failed at ObTTLScheduler::start

fix:json agg coredump when serialize string

[CP] [CP] add _hash_join_enabled/_optimizer_sortmerge_join_enabled/_n…

…ested_loop_join_enabled parameters