oslo.utils 8.1.0 release

meta:version: 8.1.0
meta:team: oslo
meta:diff-start: -
meta:series: epoxy
meta:branch: master
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: Hervé Beraud <hberaud@redhat.com>
meta:release:Commit: Hervé Beraud <hberaud@redhat.com>
meta:release:Change-Id: I98efc9132fb4ff7a2ac8cfc73123d55984a3b403
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Code-Review+1: Daniel Bengtsson <dbengt@redhat.com>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>