ironic 20.2.0 release

meta:version: 20.2.0
meta:diff-start: -
meta:series: zed
meta:release-type: release
meta:pypi: no
meta:first: yes
meta:release:Author: Iury Gregory Melo Ferreira <imelofer@redhat.com>
meta:release:Commit: Iury Gregory Melo Ferreira <imelofer@redhat.com>
meta:release:Change-Id: I5ca675d6b0e34886d4f9b8f02a20aa0e6cb56c9f
meta:release:Code-Review+1: Riccardo Pittau <elfosardo@gmail.com>
meta:release:Code-Review+2: Hervé Beraud <herveberaud.pro@gmail.com>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Workflow+1: Elod Illes <elod.illes@est.tech>