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##### SUMMARY
ansible-test fails to mention which interpreter as soon it picks one, causing confusing errors where user has no clue why pip install may complain about missing wheel when in fact he has wheel installed.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
ansible-test

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
ansible 2.10.2
  config file = /Users/ssbarnea/.ansible.cfg
  configured module search path = ['/Users/ssbarnea/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /Users/ssbarnea/.pyenv/versions/3.9.0/lib/python3.9/site-packages/ansible
  executable location = /Users/ssbarnea/.pyenv/versions/3.9.0/bin/ansible
  python version = 3.9.0 (default, Oct 10 2020, 09:43:04) [Clang 11.0.0 (clang-1100.0.33.8)]
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```paste below

```

##### OS / ENVIRONMENT
any

##### STEPS TO REPRODUCE
* assure that you have two python interpreters available, lets say py27 and py36
* remove wheel from python2.7, `pip2.7 uninstall wheel`
* run `ansible-test units --requirements` 


<!--- HINT: You can paste gist.github.com links for larger files -->

##### EXPECTED RESULTS

After the expected WARNING around skipping Python 2.6 due to being missing, I would expect to see an INFO message telling me that ansible-test started using next interpreter, "Python 2.7" in the list, so I would know if pip fails which pip it was as it was clearly not the one from default interpreter.

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->

<!--- Paste verbatim command output between quotes -->
```paste below
WARNING: Skipping unit tests on Python 2.6 due to missing interpreter.
Could not build wheels for pip, since package 'wheel' is not installed.
Could not build wheels for setuptools, since package 'wheel' is not installed.
Could not build wheels for cryptography, since package 'wheel' is not installed.
Could not build wheels for ipaddress, since package 'wheel' is not installed.
Could not build wheels for six, since package 'wheel' is not installed.
Could not build wheels for cffi, since package 'wheel' is not installed.
....
```

"""Return the openssl version."""
    if not python.version.startswith('2.'):
        
        
        version = json.loads(raw_command([python.path, os.path.join(ANSIBLE_TEST_TOOLS_ROOT, 'sslcheck.py')], capture=True)[0])['version']
        if version:
            display.info(f'Detected OpenSSL version {version_to_str(version)} under Python {python.version}.', verbosity=1)
            return tuple(version)
    
    
    openssl_path = find_executable('openssl', required=False)
    if openssl_path:
        try:
            result = raw_command([openssl_path, 'version'], capture=True)[0]
        except SubprocessError:
            result = ''
        match = re.search(r'^OpenSSL (?P<version>[0-9]+\.[0-9]+\.[0-9]+)', result)
        if match:
            version = str_to_version(match.group('version'))
            display.info(f'Detected OpenSSL version {version_to_str(version)} using the openssl CLI.', verbosity=1)
            return version
    display.info('Unable to detect OpenSSL version.', verbosity=1)
    return None