Merge tag '9.0.0' into debian/zed

oslo.config 9.0.0 release

meta:version: 9.0.0
meta:diff-start: -
meta:series: zed
meta:release-type: release
meta:pypi: yes
meta:first: yes
meta:release:Author: Elod Illes <elod.illes@est.tech>
meta:release:Commit: Elod Illes <elod.illes@est.tech>
meta:release:Change-Id: Ib5e588be618d9bcac136b90d28d9af806a2d58ec
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>