ironic 12.2.0 release

meta:version: 12.2.0
meta:diff-start: -
meta:series: train
meta:release-type: release
meta:pypi: no
meta:first: yes
meta:release:Author: Mark Goddard <mark@stackhpc.com>
meta:release:Commit: Mark Goddard <mark@stackhpc.com>
meta:release:Change-Id: I57ef120b8521c05aa80f66037e72dac5454ca189
meta:release:Code-Review+1: Dmitry Tantsur <dtantsur@protonmail.com>
meta:release:Code-Review+1: Riccardo Pittau <elfosardo@gmail.com>
meta:release:Code-Review+1: Julia Kreger <juliaashleykreger@gmail.com>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Code-Review+2: Sean McGinnis <sean.mcginnis@gmail.com>
meta:release:Workflow+1: Sean McGinnis <sean.mcginnis@gmail.com>
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