keystone/client/image_manager.yml

parameters:
  keystone:
    client:
      enabled: true
      server:
        identity:
          admin:
            host: ${_param:keystone_service_host}
            port: 35357
            token: ${_param:keystone_service_token}
          roles:
          - image_manager
          project:
            admin:
              user:
                image_manager:
                  is_admin: false
                  password: ${_param:keystone_image_manager_password}
                  roles:
                  - image_manager