add waffle switch to disable tasks for maintenance

[estherjsuh]

Task RED-2075

[OmarIthawi]

Thanks @estherjsuh! The tests are now failing because django-waffle wasn't added to the requirements:

    module = import_module(entry)
  File "/opt/hostedtoolcache/Python/2.7.18/x64/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
ImportError: No module named waffle
ERROR: InvocationError for command /home/runner/work/figures/figures/.tox/py27-ginkgo/bin/pytest -c pytest-ginkgo.ini (exited with code 1)

Please fix that and it should be good to make the tests passes.

[OmarIthawi]

@estherjsuh I see that Juniper tests passes which is great. Please downgrade the django-waffle for both Ginkgo and Hawthorn.

[OmarIthawi]

some fixes

[OmarIthawi]

let's try django_db mark

[OmarIthawi]

That's great! Test passes and the code looks great to me.

Thanks @estherjsuh!

I'll wait for John to review it because we're both new to this code.

[johnbaldwin]

Hey @estherjsuh Great work! All my inline comments are on styling. Minor things, but if you would address those please.

You will need to merge from master into this PR branch

Thanks!

[estherjsuh]

@johnbaldwin Thank you for the review! I made the suggested changes, and I will merge once you have a final pass at it.

[johnbaldwin]

Great work, @estherjsuh ! Ship it!