Move hivemind tests from test_api repo to hivemind repo to simplify and encourage usage
Currently we have hived and hivemind tests in the same repo. I think the original idea was to avoid bloat of tests in the hivemind repo, but the tests are not that huge, and this organizational structure adds complexity to updating and even using the tests (especially if you're primarily relying on the CI system to run tests for you, and you want to analyze what version of the tests were run). To solve this, we'll be moving hivemind tests directly into the hivemind repo.