Merge tag '1.5.1' into debian/yoga

oslo.limit 1.5.1 release

meta:version: 1.5.1
meta:diff-start: -
meta:series: yoga
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: Ib493c2bd32c1bcef28d971724442abc2a2690b66
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Workflow+1: Elod Illes <elod.illes@est.tech>