Comment 7 for bug 1967945

In failed job: https://logserver.rdoproject.org/95/40195/3/check/periodic-tripleo-ci-build-containers-centos-9-push-master/e798e3e/job-output.txt

```
2022-04-06 13:29:27.231736 | LOOP [ensure-pip : Run get-pip.py for {{ zj_item }}]
2022-04-06 13:29:30.853309 | primary | Looking in indexes: http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/pypi/simple, http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/wheel/centos-9-x86_64
2022-04-06 13:29:30.853543 | primary | Collecting pip
2022-04-06 13:29:30.853585 | primary | Downloading http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/pypifiles/packages/a4/6d/6463d49a933f547439d6b5b98b46af8742cc03ae83543e4d7688c2420f8b/pip-21.3.1-py3-none-any.whl (1.7 MB)
2022-04-06 13:29:30.853619 | primary | ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1.7/1.7 MB 64.8 MB/s eta 0:00:00
2022-04-06 13:29:30.853651 | primary | Collecting wheel
2022-04-06 13:29:30.853682 | primary | Downloading http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/pypifiles/packages/27/d6/003e593296a85fd6ed616ed962795b2f87709c3eee2bca4f6d0fe55c6d00/wheel-0.37.1-py2.py3-none-any.whl (35 kB)
2022-04-06 13:29:30.853713 | primary | Installing collected packages: wheel, pip
2022-04-06 13:29:30.853743 | primary | WARNING: The script wheel is installed in '/usr/local/bin' which is not on PATH.
2022-04-06 13:29:30.853787 | primary | Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
2022-04-06 13:29:30.853822 | primary | WARNING: The scripts pip, pip3 and pip3.9 are installed in '/usr/local/bin' which is not on PATH.
2022-04-06 13:29:30.853855 | primary | Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
2022-04-06 13:29:30.853886 | primary | Successfully installed pip-21.3.1 wheel-0.37.1
```

and passed on https://review.rdoproject.org/r/c/testproject/+/40195
https://logserver.rdoproject.org/95/40195/3/check/periodic-tripleo-ci-build-containers-centos-9-push-master/85af6c0/job-output.txt

```
LOOP [ensure-pip : Run get-pip.py for {{ zj_item }}]
2022-04-06 14:17:46.684609 | primary | Looking in indexes: http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/pypi/simple, http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/wheel/centos-9-x86_64
2022-04-06 14:17:46.684871 | primary | Collecting pip
2022-04-06 14:17:46.684933 | primary | Downloading http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/pypifiles/packages/4d/16/0a14ca596f30316efd412a60bdfac02a7259bf8673d4d917dc60b9a21812/pip-22.0.4-py3-none-any.whl (2.1 MB)
2022-04-06 14:17:46.684988 | primary | ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 2.1/2.1 MB 35.1 MB/s eta 0:00:00
2022-04-06 14:17:46.685043 | primary | Collecting wheel
2022-04-06 14:17:46.685097 | primary | Downloading http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/pypifiles/packages/27/d6/003e593296a85fd6ed616ed962795b2f87709c3eee2bca4f6d0fe55c6d00/wheel-0.37.1-py2.py3-none-any.whl (35 kB)
2022-04-06 14:17:46.685150 | primary | Installing collected packages: wheel, pip
2022-04-06 14:17:46.685202 | primary | WARNING: The script wheel is installed in '/usr/local/bin' which is not on PATH.
2022-04-06 14:17:46.685255 | primary | Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
2022-04-06 14:17:46.685311 | primary | WARNING: The scripts pip, pip3 and pip3.9 are installed in '/usr/local/bin' which is not on PATH.
2022-04-06 14:17:46.685363 | primary | Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
2022-04-06 14:17:46.685415 | primary | Successfully installed pip-22.0.4 wheel-0.37.1
```

Pip version got updated automatically and fixes the issue.