Zuul build-openstack-releasenotes job fail in ha project

[Lin Shuicheng]

Here is the failure log:
:stderr: DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
ERROR: Could not find a version that satisfies the requirement Sphinx===3.0.3 (from -c /home/zuul/src/opendev.org/openstack/requirements/upper-constraints.txt (line 396)) (from versions: 0.1.61611, 0.1.61798, 0.1.61843, 0.1.61945, 0.1.61950, 0.2, 0.3, 0.4, 0.4.1, 0.4.2, 0.4.3, 0.5, 0.5.1, 0.5.2b1, 0.5.2, 0.6b1, 0.6, 0.6.1, 0.6.2, 0.6.3, 0.6.4, 0.6.5, 0.6.6, 0.6.7, 1.0b1, 1.0b2, 1.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.1, 1.1.1, 1.1.2, 1.1.3, 1.2b1, 1.2b2, 1.2b3, 1.2, 1.2.1, 1.2.2, 1.2.3, 1.3b1, 1.3b2, 1.3b3, 1.3, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.4a1, 1.4b1, 1.4, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.4.8, 1.4.9, 1.5a1, 1.5a2, 1.5b1, 1.5, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5, 1.5.6, 1.6b1, 1.6b2, 1.6b3, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.6.6, 1.6.7, 1.7.0b1, 1.7.0b2, 1.7.0, 1.7.1, 1.7.2, 1.7.3, 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.7.8, 1.7.9, 1.8.0b1, 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5, 2.0.1, 2.1.1)
ERROR: No matching distribution found for Sphinx===3.0.3 (from -c /home/zuul/src/opendev.org/openstack/requirements/upper-constraints.txt (line 396))

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/731077

[Ghada Khalil (gkhalil)]

stx.4.0 / high priority - assuming this will prevent commits from merging in the ha repo due to zuul failures

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/731077
Committed: https://git.openstack.org/cgit/starlingx/zuul-jobs/commit/?id=534f4b1b6ce262da7bd37bdc3831c98020147560
Submitter: Zuul
Branch: master

commit 534f4b1b6ce262da7bd37bdc3831c98020147560
Author: Shuicheng Lin <email address hidden>
Date: Wed May 27 23:06:46 2020 +0800

    Fix build-openstack-releasenotes job failure

    Need switch to python3 path in order to meet the requirement.

    Closes-Bug: 1880802

    Change-Id: If9d9651054f8de4e5bf98137e24638cc77532a58
    Signed-off-by: Shuicheng Lin <email address hidden>