* open unittests on windows

* open GPU unittest on windows

* upgrade comment string to raw string

* fix string in

* fix string with ' '

* revert update on comments

* upgrade only necessary

* fix sample code checker

* fix comments with '''

* add musl docker build script

* rm space test=document_fix

* fix some docs and types errors test=document_fix

* move install of python requirement to docker build

* add copyright to docker file.

* add extr opts

* format docs

* add unittest and check unittest for windows

* fix lstm OP compile error on windows

* open a part of GPU unittest for windows

* open a part of GPU unittest for windows

* add monitoring for executive ut at night

* fix some error for paddle_build.bat

* fix some error

* fix some error in windows

* fix some error on windows

* clear clcache cache file and reopen clcache, test=develop

* reopen clcache, test=develop

* retry will not be executed when the number of failed ut is greater than 20

* add log display

* fix some error

* fix some error

* fix some error

* fix some error

* add musl docker build script

* rm space test=document_fix

* fix some docs and types errors test=document_fix

* 01:Modify the shell script according to the specification

* 01:Modify the shell script according to the specification

* fix judge bug of errorlevel

* fix some error

* Fix xpu notest;test=kunlun

* fix

* test=kunlun

* test=kunlun

* fix optimizer init

* Enhance the detection of whether to keep the build directory

* Enhance the detection of whether to keep the build directory

* update dockerfile

* update dockerfile

* update dockerfile

* update dockerfile

* add opencv in ci

* update cidockerfile

* test nccl

* fix diff

* fix dockerfile

* update ubuntu nccl2.7.8

* update ubuntu nccl2.7.8

* Add build paddle inference;test=document_fix

* Add build paddle inference;test=document_fix

* disable ut quickly

* fix some error

* fix some error

* install urllib2 package

* use requests package instead of urllib2

* fix error caused by windows regular parameter

* fix error on windows

* fix some error

* fix with format error

* show disable ut in log

* fix some error

* fix some error

* add the handling of error in executing get_quickly_disable_ut

* add xpu test

* notest;add kunlun_test

* notest;add kunlun_test

* notest;test=kunlun

* notest;test=kunlun

* notest;test=kunlun

* notest;test=kunlun

* test=kunlun

* add pip new requirements to windows

* Increase the conditions that restrict system installation

This reverts commit 29f1560d.

* add unittest count of windows

* Reduce the number of retries

* Support python3.8

test=notest

* Fix install pr requirements.txt

* test=document_fix