cmdline.py: Misc. clean-up
cmdline.py: Misc. clean-up

- Rename parameter to avoid namespace collision
- Fixed up MyWrapper class (inherit from object, add __init__)
- Made _get_item a function as it could be static, so instead
  of having it a static method, took it out
- changed cli method to static and make it return values instead of
  setting directly to class member variables.  Better to have the
  class variables created initialized in the __init__ method

Signed-off-by: Tony Asleson <1ef2d381aa56d512126ddaacc29e68136e4fdf55@redhat.com>

tasleson/libstoragemgmt,lazy404/libstoragemgmt,lazy404/libstoragemgmt,jumitche/libstoragemgmt,libstorage/libstoragemgmt,HP-Scale-out-Storage/libstoragemgmt,HP-Scale-out-Storage/libstoragemgmt,tasleson/libstoragemgmt,libstorage/libstoragemgmt,joehandzik/libstoragemgmt,joehandzik/libstoragemgmt,libstorage/libstoragemgmt,lazy404/libstoragemgmt,cathay4t/libstoragemgmt,jumitche/libstoragemgmt,jumitche/libstoragemgmt,libstorage/libstoragemgmt,HP-Scale-out-Storage/libstoragemgmt,cathay4t/libstoragemgmt,jumitche/libstoragemgmt,libstorage/libstoragemgmt,cathay4t/libstoragemgmt,cathay4t/libstoragemgmt,jumitche/libstoragemgmt,tasleson/libstoragemgmt,tasleson/libstoragemgmt,joehandzik/libstoragemgmt,HP-Scale-out-Storage/libstoragemgmt,cathay4t/libstoragemgmt,tasleson/libstoragemgmt,joehandzik/libstoragemgmt,lazy404/libstoragemgmt