---
features:
  - |
    Extra headers can be added to Keystone responses by adding items to
    ``keystone_extra_headers``. Example:

    .. code-block:: yaml

        keystone_extra_headers:
          - parameter: "Access-Control-Expose-Headers"
            value: "X-Subject-Token"
          - parameter: "Access-Control-Allow-Headers"
            value: "Content-Type, X-Auth-Token"
          - parameter: "Access-Control-Allow-Origin"
            value: "*"