##### SUMMARY

In the Kubernetes collection's CI tests, the sanity check, which uses `ansible-test sanity --docker -v --color --python 3.6`, started failing with the following error:

```
ERROR: Command "importer.py" returned exit status 1.
>>> Standard Error
Traceback (most recent call last):
  File "/root/ansible/ansible_collections/community/kubernetes/tests/output/.tmp/sanity/import/minimal-py36/bin/importer.py", line 447, in <module>
    main()
  File "/root/ansible/ansible_collections/community/kubernetes/tests/output/.tmp/sanity/import/minimal-py36/bin/importer.py", line 51, in main
    from ansible.utils.collection_loader import AnsibleCollectionLoader
  File "/root/ansible/lib/ansible/utils/collection_loader.py", line 15, in <module>
    from ansible import constants as C
  File "/root/ansible/lib/ansible/constants.py", line 12, in <module>
    from jinja2 import Template
ModuleNotFoundError: No module named 'jinja2'
```

Nothing in the collection has changed in the past week, and no runs failed until this morning's CI run, so it seems something committed to ansible/ansible `devel` has caused this failure.

##### ISSUE TYPE

- Bug Report

##### COMPONENT NAME

ansible-test

##### ANSIBLE VERSION

devel (as of this morning)

##### CONFIGURATION

N/A - defaults

##### OS / ENVIRONMENT

Linux

##### STEPS TO REPRODUCE

  1. Clone kubernetes collection repo
  2. Install Ansible @ devel
  3. Run `ansible-test sanity --docker -v --color --python 3.6`

##### EXPECTED RESULTS

Tests should pass, as they have for the past few weeks.

##### ACTUAL RESULTS

Test fail, with the message in this issue's summary.
text.append('%s: %s' % (k.upper(), ', '.join(doc[k])))
            else:
                text.append(DocCLI._dump_yaml({k.upper(): doc[k]}, opt_indent))
            del doc[k]
        text.append('')
        if 'plainexamples' in doc and doc['plainexamples'] is not None:
            text.append("EXAMPLES:")
            text.append('')
            if isinstance(doc['plainexamples'], string_types):
                text.append(doc.pop('plainexamples').strip())
            else:
                text.append(yaml.dump(doc.pop('plainexamples'), indent=2, default_flow_style=False))
            text.append('')
            text.append('')
        if 'returndocs' in doc and doc['returndocs'] is not None:
            text.append("RETURN VALUES:")
            if isinstance(doc['returndocs'], string_types):
                text.append(doc.pop('returndocs'))
            else:
                text.append(yaml.dump(doc.pop('returndocs'), indent=2, default_flow_style=False))
        text.append('')
        try:
            metadata_block = DocCLI.get_metadata_block(doc)
            if metadata_block:
                text.extend(metadata_block)
                text.append('')
        except Exception:
            pass  
        return "\n".join(text)