Change-Id: Ie0ec451d834da52de0af012df7e86756c328ae91

Update the URL to the upper-constraints file to point to the redirect
rule on releases.openstack.org so that anyone working on this branch
will switch to the correct upper-constraints list automatically when
the requirements repository branches.

Until the requirements repository has as stable/yoga branch, tests will
continue to use the upper-constraints list on master.

Change-Id: Idbeb906956df8583a34ba469b2cbd19076dd8d90

Continue to use tox 3 in the stable branches.

Two changes:
- .zuul.yaml: set the ensure_tox_version to use <4, which will
  tell zuul to install tox<4 if it's not present
- tox.ini: set requires=tox<4 so that if tox has been installed
  already, our tox-based jobs will use tox 3 to run the tests

Change-Id: Ica4c0a1d4f861e528ce8995766e82541dc710e0f
(cherry picked from commit 22a3169)

python-cinderclient-functional-py39 job has been failing since
23 November, 2022[1]. The failure has been described in detail
in the mailing thread replies[2][3].
In summary, a new iSCSI target path was added in the kernel,
/sys/kernel/config/target/iscsi/*cpus_allowed_list*, which
is causing rtslib-fb 2.7.4 to fail. This issue was fixed in
rtslib-fb 2.7.5 but the upper-constraints in stable/yoga branch
is 2.7.4[4]. This isn't a problem in stable/zed since the version
used for rtslib-fb is 2.7.5[5].

I have proposed a requirements patch to bump the rtslib-fb version
to 2.7.5[6] and tested it against cinderclient[7] where the
python-cinderclient-functional-py39 job is passing.

I've tried reaching out to the requirements team on IRC and on ML
to make this change but there hasn't been any response.
The best way to move forward and unblock our gate is to skip the
failing test test_backup_create_and_delete and unblock changes
in the stable/yoga branch.

[1] https://zuul.openstack.org/builds?job_name=python-cinderclient-functional-py39&branch=stable%2Fyoga&skip=0
[2] https://lists.openstack.org/pipermail/openstack-discuss/2023-January/031947.html
[3] https://lists.openstack.org/pipermail/openstack-discuss/2023-January/031958.html
[4] https://opendev.org/openstack/requirements/src/branch/stable/yoga/upper-constraints.txt#L13
[5] https://opendev.org/openstack/requirements/src/branch/stable/zed/upper-constraints.txt#L13
[6] https://review.opendev.org/c/openstack/requirements/+/870714
[7] https://review.opendev.org/c/openstack/python-cinderclient/+/870513

Closes-Bug: #2008010

Change-Id: I54b1d797d9662ba180e146ee91ea7b5ed6d0a0a1

Change-Id: Ib109bd9a6900ff0ba169b3b93876233019edaa4f

This patch fixes 3 problems to unblock the gate:

1. Replace centos-8 nodeset with ubuntu-bionic

devstack-single-node-centos-8-stream nodeset was dropper recently from
zuul config, so now Zuul shows config error for jobs that were using
this nodeset. centos 8 was used to be able to install py36 for testing
the minimum python version that can be used in Yoga and older branches.

This patch replaces to ubuntu-bionic as that is still available and
that has py36 by default.
Note, that this unfortunately failing because bionic is not supported
in this version in devstack and needs a FORCE=yes entry in local.conf.
So this job needs to be set as non-voting temporarily and set back to
voting as soon as the job is fixed.

2. Cap setuptools <71.0.0

Furthermore, this change caps setuptools to be <71.0.0 as py39 docs
job (on ubuntu-focal) started to fail due to recent virtualenv
release (20.26.4) on Yoga (which bundles setuptools), because we have
'packaging==21.3' in this branch that is not compatible with newer
setuptools [1].

setuptools is bundled in virtualenv, so it has to be capped via the
virtualenv package. tox also needed to be capped (<4) as gate uses
tox 3.28.0, but with capping virtualenv we pull in latest tox as well,
which would cause other errors.

3. Set py39 based functional job as non-voting

This is needed as py39 job on CentOS Stream 9 fails as there is no
pip installed. Similarly like with the py36 functional job, this
needs to be set back to voting as soon as the job is fixed.

[1] pypa/setuptools#4483

Change-Id: I007be9e8b99060abe1756396603871fdc50a50fe
Signed-off-by: Elod Illes <elod.illes@est.tech>