##### 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 = []
        desc = DocCLI.tty_ify(doc['short_description'])
        text.append("- name: %s" % (desc))
        text.append("  %s:" % (doc['module']))
        pad = 31
        subdent = " " * pad
        limit = display.columns - pad
        for o in sorted(doc['options'].keys()):
            opt = doc['options'][o]
            if isinstance(opt['description'], string_types):
                desc = DocCLI.tty_ify(opt['description'])
            else:
                desc = DocCLI.tty_ify(" ".join(opt['description']))
            required = opt.get('required', False)
            if not isinstance(required, bool):
                raise("Incorrect value for 'Required', a boolean is needed.: %s" % required)
            if required:
                desc = "(required) %s" % desc
            o = '%s:' % o
            text.append("      %-20s   # %s" % (o, textwrap.fill(desc, limit, subsequent_indent=subdent)))
        text.append('')
        return "\n".join(text)
    @staticmethod
    def _dump_yaml(struct, indent):