tripleo-common/image-yaml/overcloud-images-centos7.yaml

disk_images:
  -
    imagename: overcloud
    arch: amd64
    type: qcow2
    distro: centos7
    elements:
      - selinux-permissive delorean-repo centos-cloud-repo epel
  -
    imagename: ramdisk_agent
    arch: amd64
    type: qcow2
    distro: centos7
    elements:
      - selinux-permissive delorean-repo centos-cloud-repo epel