upgrade:
  - The configuration option ``fatal_exception_format_errors`` has been removed
    from the ``[DEFAULT]`` group.
  - The ironic-lib library has been retired and is no longer required for
    operation of Ironic.
deprecations:
  - The configuration option ``fatal_exception_format_errors`` is deprecated
    from ``[ironic_lib]`` group and should be migrated to the
    ``[errors]/fatal_exception_format_errors``.
    The old location ``[ironic_lib]/fatal_exception_format_errors`` will be
    respected during the deprecation period.