Fix public/os permissions
Fix public/os permissions

When using osimage import,
the permissions on os directory
were too strict. Relax permissions
on public/os

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