Cycle highlights for Ironic

Change-Id: I9009cc99a6c891acae1b9ea9da95b91cf541acf1

deliverables/caracal/ironic.yaml

@@ -20,3 +20,38 @@ branches:
     location: 23.1.0
   - name: bugfix/24.0
     location: 24.0.0
+cycle-highlights:
+  - Ironic has enabled RBAC support by default by changing the default
+    values of ``[oslo_policy]enforce_scope`` and
+    ``[oslo_policy]enforce_new_defaults`` to ``True``. Additionally, we
+    added ``[DEFAULT]rbac_service_project_name`` to define a project where
+    users in that project are treated as having a service role.
+    Please see Ironic release notes for full details.
+  - Ironic has added the ability to drain active tasks from a conductor
+    before shutdown. Sending a ``SIGUSR2`` signal to an ironic-conductor
+    will now attempt to complete running tasks with a timeout of
+    ``[DEFAULT]drain_shutdown_timeout``. No new tasks will be started on
+    the conductor while it's draining.
+  - Ironic now has basic testing for OVN-based deployments, using the OVN
+    DHCP service. This includes lightly tested support for OVN VTEP switches.
+    Operators considering use of this support should read
+    `Ironic OVN documentation <https://docs.openstack.org/ironic/latest/admin/ovn-networking.html>`_
+    for more information and details on limitations.
+  - Several Ironic drivers have been deprecated in favor of more modern,
+    redfish-based drivers. The ``ibmc``, ``xclarity``, and ``idrac-wsman``
+    drivers will be removed during a future development cycle. Operators
+    utilizing these drivers are encouraged to use the redfish hardware type
+    instead. Additionally, users of the ``ilo`` hardware type on newer ILO6-based
+    hardware will now be prompted to use ``redfish`` instead.
+  - Ironic now supports UEFI HTTP mode booting. The ``http`` boot interface is
+    based upon the ``pxe`` interface, and ``http-ipxe`` is based upon ``ipxe``.
+  - Ironic now supports in-band inspection and node auto-discovery without an
+    additional ironic-inspector service. An online data migration was added which
+    migrates inspection interface on idle nodes to ``agent`` if inspector-based
+    inspection is disabled, and agent-based inspection is enabled.
+  - Ironic will now reserve a small number of worker threads for user-interactive
+    API usage. Previously, an overloaded Ironic cluster could fail API calls if many
+    nodes performed provisioning actions at the same time.
+  - Ironic now supports pulling down images from a web server authenticated
+    using basic auth. This permits standalone Ironic users to secure their
+    external image repositories.