python-ironicclient 2.2.0 release

meta:version: 2.2.0
meta:diff-start: -
meta:series: queens
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: Julia Kreger <juliaashleykreger@gmail.com>
meta:release:Commit: Julia Kreger <juliaashleykreger@gmail.com>
meta:release:Change-Id: I0b36844a7691ff08c4de0d16a4b580cb827f605c
meta:release:Code-Review+1: Matt Riedemann <mriedem.os@gmail.com>
meta:release:Code-Review+2: Doug Hellmann <doug@doughellmann.com>
meta:release:Workflow+1: Doug Hellmann <doug@doughellmann.com>
meta:release:Code-Review+1: melissaml <ma.lei@99cloud.net>
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