* new module: AIX rootvg backup image using mksysb
This module is simple but very useful for AIX system
administrators. Easy to construct playbooks to generate
and manage rootvg backups using mksysb tool.
* added module_check, pep8, non-written convention
- implemented module_check;
- fixed some pep8 and non-written convention
* removed parameters as global variables and doc
Moved global variables parameters to inside main()
Better doc format for mentioned files