python-ironicclient 2.2.1 release

meta:version: 2.2.1
meta:diff-start: -
meta:series: queens
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: Dmitry Tantsur <divius.inside@gmail.com>
meta:release:Commit: Dmitry Tantsur <divius.inside@gmail.com>
meta:release:Change-Id: I75da3e6d2349a0f1c16773902c9a990750ab5fc8
meta:release:Code-Review+2: Sean McGinnis <sean.mcginnis@gmail.com>
meta:release:Code-Review+1: melissaml <ma.lei@99cloud.net>
meta:release:Code-Review+1: qingszhao <zhao.daqing@99cloud.net>
meta:release:Code-Review+2: Tony Breeds <tony@bakeyournoodle.com>
meta:release:Workflow+1: Tony Breeds <tony@bakeyournoodle.com>