* move set_module_args to units.modules.utils
* unit tests: reuse set_module_args
* unit tests: mock exit/fail_json in module.utils.ModuleTestCase
* unit tests: use module.utils.ModuleTestCase
* unit tests: fix 'import shadowed by loop variable'
* Adding git_command module and its UT file
* Changing Author Name and removing 2 blank lines
* Removing blank lines
* Adding enos_config and its UT files
* Removing config module as I am allowed to have only module per PR
* Work on Ganesh's Review comments
* John Review Comments on enos_command.py
* Review comments of John