Ironic cycle highlights for Wallaby

Note: Originally this had links, but due to openstack doc processes,
plus release tooling processes, and a lack of context,
this resulted in objections due to 404'ed links that would work in
about a week and a half, where as if we tried to link to the unreleased
doc, it would be gone and not work in week and a half.

After checking with Kendall, we determined that since only Ironic was
really doing this, we would remove the links for now, and they can be
added back in later.

`UEFI Partition Image handling <https://docs.openstack.org/releasenotes/ironic-python-agent/wallaby.html#relnotes-6-5-0-bug-fixes>`_
`NVMe Secure Erase <https://docs.openstack.org/releasenotes/ironic-python-agent/wallaby.html#new-features>`_
`per-instance deployment driver interface overrides <https://docs.openstack.org/ironic/latest/install/standalone.html#overriding-a-hardware-interface>`_
`deploy time "deploy_steps" <https://docs.openstack.org/releasenotes/python-ironicclient/wallaby.html#new-features>`_w

Change-Id: I92a42f83a67da008ec37f66791a7b859ef20b32c

deliverables/wallaby/ironic.yaml

@@ -20,3 +20,13 @@ branches:
     location: 16.1.0
   - name: bugfix/16.2
     location: 16.2.0
+cycle-highlights:
+  - Redfish capability enhancements covering Out of Band hardware RAID
+    configuration, and automatic Secure Boot setting enablement.
+  - Deployment and Cleaning enhancements including
+    UEFI Partition Image handling, NVMe Secure Erase,
+    per-instance deployment driver interface overrides,
+    deploy time "deploy_steps", and file injection.
+  - The ``System`` scoped RBAC model is now supported by Ironic along with
+    the ``admin``, ``member``, and ``reader`` roles.
+    This work has resulted in over 1500 new unit tests being added to Ironic.