##### 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.
pfiles = {}
        for plugin in sorted(self.plugin_list):
            try:
                
                filename = loader.find_plugin(plugin, mod_type='.py', ignore_deprecated=True, check_aliases=True)
                if filename is None:
                    continue
                if filename.endswith(".ps1"):
                    continue
                if os.path.isdir(filename):
                    continue
                pfiles[plugin] = filename
            except Exception as e:
                raise AnsibleError("Failed reading docs at %s: %s" % (plugin, to_native(e)), orig_exc=e)
        return pfiles
    @staticmethod
    def print_paths(finder):
        ''' Returns a string suitable for printing of the search path '''
        
        ret = []
        for i in finder._get_paths(subdirs=False):
            if i not in ret:
                ret.append(i)
        return os.pathsep.join(ret)
    @staticmethod
    def get_snippet_text(doc):