test: add TestNG cases into coverage test

* fix: taosbenchmark coverity scan issues

* test: fix default_json py logic

* fix: update taos-tools 217a267 for 2.6

feat(shell): modify introduction for tab

* chore: remove tools/taosdumpTestBenchmark.py since mess logic

* chore: fix taostools_ver mechanism

* chore: fix taostools_ver mechanism

* test: refine 5-taos-tools td-12478.py

* chore: fix release.sh taos-tools tag for 2.6

fix: release the local meta cache of each sql

* chore: remove tools/taosdumpTestBenchmark.py since mess logic

* chore: fix taostools_ver mechanism

* test: refine 5-taos-tools td-12478.py

fix(shell): lastWord function need one one byte for p1 pointer V26

Feat/TS-1754-V26 Support aggAlways config option to control count if zero row

fix: set timestamp precision of query in tscCreateQueryFromQueryInfo

fix: shell source error

* chore: remove tools/taosdumpTestBenchmark.py since mess logic

* chore: fix taostools_ver mechanism

feat(shell): support create table as and nest query fill for 2.6

fix: When the dataDir is configured in taos.cfg, the env DATA_DIR is wrong.

fix(query): fix issues found by Coverity Scan in qExecutor.c in 2.6

fix:add totalRows to get the result lines after parser

fix(query): mem tskey maybe large than pCheckInfo->lastKey if order desc

fix:add totalRows to get the result lines after parser