There is not much to say. Reproducer is: 1. Clone tripleo-quickstart 2. Apply following patch, without it on CentOS7 quicktart fails with suntax error: [root@dell-t5810ws-rdo-13 tripleo-quickstart]$ git show bfbc1d00e2fc82e44e3fdd92382b0ec2d8d13b4c commit bfbc1d00e2fc82e44e3fdd92382b0ec2d8d13b4c Author: root