Merge tag '1.5.0' into debian/yoga

oslo.upgradecheck 1.5.0 release

meta:version: 1.5.0
meta:diff-start: -
meta:series: yoga
meta:release-type: release
meta:pypi: yes
meta:first: yes
meta:release:Author: Daniel Bengtsson <dbengt@redhat.com>
meta:release:Commit: Daniel Bengtsson <dbengt@redhat.com>
meta:release:Change-Id: I8a6f7d9b51d2cc880142b6b041a3df462c4cdc8c
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>

.zuul.yaml

 - project:
     templates:
       - publish-openstack-docs-pti
-      - openstack-python3-xena-jobs
+      - openstack-python3-yoga-jobs
       - check-requirements
       - release-notes-jobs-python3
       - periodic-stable-jobs

releasenotes/source/index.rst

@@ -5,6 +5,7 @@ oslo.upgradecheck Release Notes
    :maxdepth: 1
 
    unreleased
+   xena
    wallaby
    victoria
    ussuri

releasenotes/source/xena.rst

+=========================
+Xena Series Release Notes
+=========================
+
+.. release-notes::
+   :branch: stable/xena