Fix grub hash bytes
Fix grub hash bytes

In python3, need to coerce the strings
to str or else end up with invalid grub password.

xcat2/confluent,jjohnson42/confluent,xcat2/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent