Update code using modernize tool for python 3 compatibility.
Unit test run successfull.
Story: 2008454
Task: 42840
off-by: Anderson F. de Rossi <Anderson.FrancicadeRossi@windriver.com>
Change-Id: I1ce242e84200f64929219a8585b6740fe9cdc672
Signed-off-by: Anderson F. de Rossi <Anderson.FrancicadeRossi@windriver.com>