---
features:
  - |
    Added support for `microversion 2.63`_, which includes the following
    changes:

    - New environment variable called ``OS_TRUSTED_IMAGE_CERTIFICATE_IDS``
    - New ``nova boot`` option called ``--trusted-image-certificate-id``
    - New ``nova rebuild`` options called ``--trusted-image-certificate-id``
      and ``--trusted-image-certificates-unset``
    - New kwarg called ``trusted_image_certificates`` added to python API
      bindings:

        - ``novaclient.v2.servers.ServerManager.create()``
        - ``novaclient.v2.servers.ServerManager.rebuild()``

    .. _microversion 2.63: https://docs.openstack.org/nova/latest/api_microversion_history.html#id57