* [TD-11776]<fix>change taosdemo to taosBenchmark

* change python test taosdemo

* fix

* change json back

* update taos-tools

* modify test case

* change to taosBenchmark

* update taos-tools

* update taos-tools

* update taos-tools

* revert pr

* revert

* revert

* update taos-tools

* update taos-tools with pressure mode fix

* fix test case

* update

* modify test case

* fix

* remove taosdemo test case
Co-authored-by: Shuduo Sang <sangshuduo@gmail.com>

* [TD-5398]<fix>: taosdemo 4096 columns table creation failed.

* change column name prefix from col to c for maxium column number to fix buffer length.

* fix test case for column name be shorter.

* use accurate buffer length.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>