keystone/client/v3/service/cinder.yml

parameters:
  _param:
    cinder_service_protocol: http
  keystone:
    client:
      resources:
        v3:
          users:
            cinder:
              password: ${_param:keystone_cinder_password}
              email: ${_param:admin_email}
              roles:
                service_admin:
                  name: admin
                  project_id: service