
if command failed, we usually raise exception, if command success, sometimes there is not any output (such as set, add commands) So modify the error handling for role and group commands. Change-Id: I1c0f86c04dcedd9c0d725fd73f3436be9da75ee0
if command failed, we usually raise exception, if command success, sometimes there is not any output (such as set, add commands) So modify the error handling for role and group commands. Change-Id: I1c0f86c04dcedd9c0d725fd73f3436be9da75ee0