Test fixes

[MelissaAutumn]

Resolves #207

This is a huge PR mostly due to the inclusion of the latest products json files (which the docker container generates on build iirc?) This update happened to fix some tests. 🤔

We should also merge the docker-fixes to master so we can change the target branch of this PR to master.

Unfortunately this was mostly an exercise of whack-a-mole. Not the cleanest, but I figured if we can at least get the API routes solidly tested, we can move ahead with any major upgrades.

So here's some notes:

• Removed or xfail'd persona-related view tests (as the url route is now commented out/removed.)
• xfail'd some Firefox/AMO specific tests
• Modified some tests that used areas of ATN that requires Thunderbird specific changes (GUID, specific_max_version, etc...) Biggest pain point, as changing fixtures would break other tests. Near the end of these fixes, I started just updating AppVersions directly in code.
• In src/olympia/core/tests/test_certifi.py there's two tests that ping google and amazon for 200 statuses. These fail when running the complete suite, but succeed when run alone. I actually have no clue as to why, so I didn't mark them as xfail.

We should definitely squish this PR, lmk if I should pre-squish these commits.

(It would also be nice to maybe get a CI going with this project.)

[MelissaAutumn]

I ran the squish merge on the new docker image (separate PR) and we may have some test regressions lol. But much better than before:

======== 143 failed, 5542 passed, 48 xfailed, 1 xpassed, 31 warnings, 2 error in 1569.96 seconds ========

This should be good after a master rebase.