The main purpose of this patch is to do the refactor that
supports replacing tracebacks with fail_json. Additionally, the
following was done.
* Removed re-def of cleanup_tokens.
* Changed parameter args to be keywords.
* Changed imports to include new module_util locations.
* Imports also include developing (sideband) module_util locations.
* Changed to using F5Client and plain AnsibleModule to prevent tracebacks caused by missing libraries.
* Removed init and update methods from most Parameter classes (optimization) as its now included in module_utils.
* Changed module and module param references to take into account the new self.module arg.
* Minor bug fixes made during this refactor.
* 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'
