tripleo-common/image-yaml/overcloud-images-rhel7.yaml

disk_images:
  -
    imagename: overcloud-full
    arch: amd64
    type: qcow2
    distro: rhel7
    environment:
      FS_TYPE: xfs
  -
    imagename: ironic-python-agent
    arch: amd64
    type: qcow2
    distro: rhel7