* restore .gitmodules for 2.0

* Revert "[TD-13408]<test>: move tests out from TDengine"

This reverts commit 9d342bf3f5b404fc1014400060e012b387bfdb8c.

* immigarate file change from stand-alone repo to TDengine

for 2.0

* remove tests repository checkout
Co-authored-by: Ntangfangzhi <fztang@taosdata.com>

* [TD-13408]<test>: move tests out from TDengine

for 2.0

* add Jenkinsfile2
Co-authored-by: Ntangfangzhi <fztang@taosdata.com>

update boundary testcase.

other changes:
max row length from 65536 to 65535
fix byte order issue in get super table meta

[TD-412]

[TD-383]