minor cleanup of lxc module
minor cleanup of lxc module

YueRen/tryM2,fhinkel/InteractiveShell,antonleykin/InteractiveShell,fhinkel/InteractiveShell,fhinkel/InteractiveShell,antonleykin/InteractiveShell,antonleykin/InteractiveShell,YueRen/tryM2,fhinkel/InteractiveShell,YueRen/tryM2