Add preset tests

[hwmarkcheng]

Checklist

Adding Preset Integration and unit tests for the Preset ingestion method.

Test setup:

• https://datahubproject.io/docs/metadata-ingestion/developing/#:~:text=all dev requirements.-,pip install -e '.[dev]',-%23 For running integration

• linting: ./gradlew :metadata-ingestion:lintFix

• Need to first install dependencies:

  cd metadata-ingestion
  ../gradlew :metadata-ingestion:installDev
  source venv/bin/activate
  datahub version  # should print "DataHub CLI version: unavailable (installed in develop mode)"

• For pytest:

  • run pytest tests/integration/preset/test_preset.py
  • run pytest tests/unit/test_preset_source.py

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)

• Links to related issues (if applicable)

• Tests for the changes have been added/updated (if applicable)

• Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.

• For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[hwmarkcheng]

#TODO still need to add mock request for test_response = self.session.get(f"{self.config.connect_uri}/version")

[llance]

I think I need to do some refactoring. I don't think api_key, api_secret and manager_uri should belong to SupersetConfig class since it is only relevant to PresetConfig. Ill put up a separate PR to remove those fields from SupersetConfig and you can rebase against master after it gets merged.

[hwmarkcheng]

Yeah, I think the only preset portion this is used might be the authentication endpoint?
Preset API is split to preset specific/superset:

https://api-docs.preset.io/#cdf2f4d7-1842-4a3e-bd15-a747295704ee