support autotest stop
[ci skip], modify request proxies in post-build.py and so on.
[ci skip], add reboot.py in jenkins-scripts.
Merge pull request #1 from cocos2d/v3

update code
Update UILoadingBar.h doxygen comments
capture this instead of reference in lambda
Update UILoadingBar.h Doxygen comments
Update CCActionObject.h Doxygen comments
Update submodule
Merge pull request #6904 from andyque/refactorUIFramework

refactor Layout and Widget
Merge pull request #6899 from samuele3hu/v3_fix

Update submodule
Merge pull request #6862 from favorcode/v3

Update UILoadingBar.h doxygen comments
Merge pull request #6809 from heliclei/autotest-stop

Support autotest stop command
Merge pull request #6816 from shujunqiao/request-build-modify

[ci skip], modify request proxies in post-build.py and so on.
Merge pull request #6841 from shujunqiao/reboot

[ci skip], add reboot.py in jenkins-scripts.
Update submodule
Merge pull request #6905 from samuele3hu/v3_fix

Update submodule