Fix compatibility with CentOS7 for imgutil build -s
Fix compatibility with CentOS7 for imgutil build -s

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