* Adding changed option to save_when for aireos
* Deprecating save option for aireos_config.
* Updating version_added to 2.7 since the PR missed the window for 2.6
* 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'