Unit Tests are failing with:

Collecting ansible<2.10
  Downloading https://files.pythonhosted.org/packages/5b/99/ce005d0314840e1a6eef34e0faf0ba4f7bccd8172b33cc84fee21afab7ad/ansible-2.9.27.tar.gz (14.8MB)
ERROR: Exception:
Traceback (most recent call last):
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/cli/base_command.py", line 153, in _main
    status = self.run(options, args)
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/commands/install.py", line 382, in run
    resolver.resolve(requirement_set)
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/legacy_resolve.py", line 201, in resolve
    self._resolve_one(requirement_set, req)
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/legacy_resolve.py", line 365, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/legacy_resolve.py", line 313, in _get_abstract_dist_for
    req, self.session, self.finder, self.require_hashes
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/operations/prepare.py", line 194, in prepare_linked_requirement
    progress_bar=self.progress_bar
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/download.py", line 465, in unpack_url
    progress_bar=progress_bar
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/download.py", line 320, in unpack_http_url
    unpack_file(from_path, location, content_type)
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/utils/unpacking.py", line 261, in unpack_file
    untar_file(filename, location)
  File "/go/src/github.com/openshift/openshift-ansible/.tox/py36-unit/lib/python3.6/site-packages/pip/_internal/utils/unpacking.py", line 222, in untar_file
    with open(path, 'wb') as destfp:
UnicodeEncodeError: 'ascii' codec can't encode character '\xe9' in position 79: ordinal not in range(128)
WARNING: You are using pip version 19.3.1; however, version 21.3.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

example: https://storage.googleapis.com/origin-ci-test/pr-logs/pull/openshift_openshift-ansible/12362/pull-ci-openshift-openshift-ansible-master-unit/1479458204667613184/build-log.txt

This failure is occurring when trying to run tox in the centos:7 base image due to incompatibility between python3.6 and pip. See https://github.com/pypa/pip/issues/10219 for more details.

Testing locally I was able to resolve this particular error by applying https://github.com/pypa/pip/issues/10219#issuecomment-888127061 like this: 

LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 tox

But that resulted in a different error: 
py36-ansible_syntax create: /test/.tox/py36-ansible_syntax
py36-ansible_syntax installdeps: -rrequirements.txt, -rtest-requirements.txt
py36-ansible_syntax installed: ansible==2.9.27,astroid==2.3.3,attrs==21.4.0,cffi==1.15.0,cryptography==36.0.1,entrypoints==0.3,flake8==3.7.9,flake8-mutable==1.2.0,flake8-print==3.1.4,importlib-metadata==4.8.3,isort==4.3.21,Jinja2==3.0.3,lazy-object-proxy==1.4.3,MarkupSafe==2.0.1,mccabe==0.6.1,more-itertools==8.12.0,packaging==21.3,pathspec==0.9.0,pluggy==0.13.1,py==1.11.0,pycodestyle==2.5.0,pycparser==2.21,pyflakes==2.1.1,pylint==2.4.4,pyparsing==3.0.6,pytest==5.4.1,PyYAML==6.0,setuptools-lint==0.6.0,six==1.16.0,typed-ast==1.4.3,typing-extensions==4.0.1,wcwidth==0.2.5,wrapt==1.11.2,yamllint==1.20.0,zipp==3.6.0
py36-ansible_syntax run-test-pre: PYTHONHASHSEED='1598049278'
py36-ansible_syntax run-test: commands[0] | python setup.py ansible_syntax
/test/.tox/py36-ansible_syntax/bin/python: can't open file 'setup.py': [Errno 2] No such file or directory
ERROR: InvocationError for command /test/.tox/py36-ansible_syntax/bin/python setup.py ansible_syntax (exited with code 2)

This seems similar to the issue fixed here: https://github.com/openshift/openshift-ansible/pull/12355

Also note we have issues https://issues.redhat.com/browse/CORS-1532 and https://issues.redhat.com/browse/CORS-1712 for migrating from the Centos:7 image, and would potentially allow us to use a newer version of python than 3.6 which is soon EOL. 3.7+ do not have this first issue.

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