* [TD-5783]<CI>add test for 2.0 branch

* fix

* fix

* [TD-4132]<test>: add taosdump-testcase of boundary value testing

* [TD-3952]<test>: add taodemo-testcase that query with restful connector

* merge master

* modify taosdemo-testcase

* add testcase of async subscirbe  and max sql num

* testcase-subscribe of super table

* testcase-modify sub

* modify subscribe testcase

* [TD-4238]<test>: add taodemo-testcase that  records of number in request sql less than 32767

* add taosdemo-subscribe-testcase

* update taosdemo testcase

* temp commit

* temp commit

* temp commit

* temp1

* temp

* [TD-4369]<test>: add testcase of resubscibe

* [TD-4826]<fix>: new error code 0x0406 (Dnode is exiting) for tsc

* [TD-4369]<test>: add testcase of resubscibe and json file

* temp

* update master to develop's version

* Update boundary2.py

* [TD-4912]<hotfix>: fix coredump when drop vnode

* Hotfix/sangshuduo/td 3801 taosdump coverity scan issue (#6642)

* [TD-3801]<fix>: taosdump coverity scan issue.

* merge from commit: 069169e7 and fix coverity scan issue.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

* [TD-4932]fix jenkins errors on master branch (#6645)

* [TD-4932]fix jenkins errors on master branch

* fix

* fix

* fix

* fix

* [TD-4132]<test>:modify taosdump-testcase of column length

* [TD-4918]<fix>: taosdemo subscribe endAfterResume. (#6653)

* [TD-4915]<fix> fix show-create-database except

* Hotfix/sangshuduo/td 4892 taosdemo sub fetch (#6669)

* [TD-4892]<fix>: taosdemo subscribe fetch result.

* fix stbname length.

* restrict prefix length.

* submit empty

* fix minor code.

* fix crash if no result file.

* decrease few debug print level.

* fix offset issue

* [TD-4987]<fix>: issues memory sanitizier detected. (#6675)

* [TD-4826]<fix>: no extra sleep if no message in vwqueue

* [TD-4593]<fix>: fix vnode cannnot close while syncing

* Hotfix/sangshuduo/td 4918 taosdemo sub afterconsume (#6685)

* [TD-4918]<fix>: taosdemo subscribe endAfterResume.

* fix mask length.

* fix heap use-after-free.

* Hotfix/sangshuduo/td 4987 detected by mem sanitizer (#6684)

* [TD-4987]<fix>: issues memory sanitizier detected.

* fix mask width issue.

* [TD-4828]<fix> handle dnode exit code

* Hotfix/sangshuduo/td 3973 use jemalloc for master (#6702)

* [TD-3973]<feature>: add jemalloc as submodule.

* [TD-3973]<feature>: add jemalloc as submodule.

* [TD-3973]<feature>: use jemalloc.

build works as following instructions:

cmake .. -DJEMALLOC_ENABLED=true

make

* fix jemalloc at tag 5.2.1

* fix conflicts

* make install works.

* fix conflicts.

* release script works.

* fix typo
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

* fix retentionpolicy bug
Co-authored-by: tomchon <haoran920c@163.com>
Co-authored-by: NMinglei Jin <mljin@taosdata.com>
Co-authored-by: NBaosheng Chang <changb9@mcmaster.ca>
Co-authored-by: NHongze Cheng <hzcheng@taosdata.com>
Co-authored-by: Shuduo Sang <sangshuduo@gmail.com>
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>
Co-authored-by: NYiqing Liu <yqliu@taosdata.com>
Co-authored-by: NHui Li <52318143+plum-lihui@users.noreply.github.com>
Co-authored-by: NyihaoDeng <yhdeng@taosdata.com>
Co-authored-by: Nwpan <wpan@taosdata.com>
Co-authored-by: NHaojun Liao <hjxilinx@users.noreply.github.com>

* [TD-4932]fix jenkins errors on master branch

* fix

* fix

* fix

* fix

* [TD-4382]<fix>: taosdemo query result file is null.

* modify CI
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>
Co-authored-by: Nliuyq-617 <yqliu@taosdata.com>

commit 0c81e3c0ba89c86f6d17d51d5056146e177cace5
Author: Huo Linhe <linhehuo@gmail.com>
Date:   Fri May 14 10:27:13 2021 +0800

    [TD-4160]<fix>: remove python connector soft links, fix tests and documents

commit f439fce413423e7d7c97eef180c93d63dedab32e
Author: Huo Linhe <linhehuo@gmail.com>
Date:   Wed May 12 18:50:53 2021 +0800

    [TD-182]: bump python connector version to v2.0.10 (#6091)

    Also fix url error in setup.py

commit 4ae55d494a262e482f6b34e8bf193cc6af62a886
Author: Huo Linhe <linhehuo@gmail.com>
Date:   Wed May 12 09:49:26 2021 +0800

    [TD-4370]<fix>: merge python connector changes to master

    Inludes:

    [TD-182]<enhance>: use single repo for python connector (#6036)

    * [TD-182]<enhance>: use single repo for python connector

    Remove code for each platform and build up one single python code base
    for windows/osx/linux platforms and python2/python3 runtime.

    * [TD-182]<enhance>: remove redundant code in python connector

    * [TD-4149] <fix>: fix python connection config error