Support new datastore: Athena

[thijs-obj]

Step one: Bach basics

• [x] Test setup Bach:
  • Create test infrastructure
  • Add --athena option for running tests
  • Add mark to annotate tests that support new datastore
• [x] Make first test work:
  • make DataFrame.from_pandas() - required by most functional tests to get an initial DataFrame with test data
  • Make super basic test work: test_df.py::test_basic()
• [x] Make tests for new datastore run in CI automatically
• [ ] Make all Series work with new datastore
  • [x] Int
  • [x] Float
  • [x] Boolean
  • [x] Uuid
  • [x] String
  • [x] Json
  • [x] Date
  • [x] DateTime
  • [x] Time
  • [x] TimeDelta
  • [ ] Possibly more
• [ ] Check which tests work out of the box, and annotate them to always run for the new datastore

Step two: Modelhub and more Bach

• [ ] Test setup Modelhub
• [ ] Port DataPipeline to work with new datastore
  • [ ] Make production data available
  • [ ] Write platform specific DataPipeline parts
• [ ] Port custom Modelhub types
• [ ] Check which Modelhub tests work out of the box, and annotate them to always run for the new datastore
• [ ] Check what works in Notebooks out of the box

Step three

Work on anything that doesn't yet work in Bach/Modelhub, prioritize based on what is needed to make Modelhub and notebooks work