Add support for stateless systems whike parsing  user and group files.
Add support for stateless systems whike parsing  user and group files.

Signed-off-by: Archana Shinde <047ac45ce396f63f3cf93ff43725668e736e0632@intel.com>

MarioCarrilloA/hyperstart,MarioCarrilloA/hyperstart,MarioCarrilloA/hyperstart