Add a test case for master and develop git workflow

[nm2107]

The master and develop git based workflow should be covered as a functional test case.

master ---o---o---------------o
               \             /
develop         o---o-------o--------------------o
                     \     /  \                 /
feature1              o---o    \               /
                                \             /
feature2                         o---o---o---o

Where the master branch is ISO to the prod, and the develop branch contains the latest features. Developers usually issue new feature branches from the develop branch.