Overcloud ceph install fails with KeyError: 'rotational'

Issue

• ceph-install-workflow.log

 2019-03-08 07:04:51,824 p=3603 u=mistral |  fatal: [192.168.x.x]: FAILED! => {"changed": true, "cmd": ["docker", "run", "--rm", "--privileged", "--net=host", "--ipc=host", "-v", "/run/lock/lvm:/run/lock/lvm:z", "-v", "/var/run/udev/:/var/run/udev/:z", "-v", "/dev:/dev", "-v", "/etc/ceph:/etc/ceph:z", "-v", "/run/lvm/lvmetad.socket:/run/lvm/lvmetad.socket", "-v", "/var/lib/ceph/:/var/lib/ceph/:z", "-v", "/var/log/ceph/:/var/log/ceph/:z", "--entrypoint=ceph-volume", ....... "failed": true, "msg": "non-zero return code", "rc": 1, "stderr": "-->  KeyError: 'rotational'", "stderr_lines": ["-->  KeyError: 'rotational'"], "stdout": "", "stdout_lines": []}

KeyError: rotational
KeyError rotational