[Jenkins] Add master build in pull-request-builder.py
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into add-master-build
Merge pull request #5886 from lmskater/add-master-build

[Jenkins] Add master build in pull-request-builder.py
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop