fix(shell): coverity scan problem fixed

test: add test case for interval

* feat: taosbenchmark support partial col 9284147 for 2.6

* fix: free cfgs

* fix: better handle command line and json memory

* test: fix two taosbenchmark test cases

* feat: update taos-tools cc973e0

* test: fix 5-taos-tools/taosbenchmark/taosdemoTestInsertWithJson.py

fix(query): fix mode function behavior if multiple highest occurrence exist

fix:table does not exist if drop databse then create database in sche…

fix: fix rpc context freed in timer callback issue

exist

TS-1913

fix: change the sql for check tables related to invalid table id

enh: supports online alter DB parameter minRows

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