CircleCI tests improvement

E2E tests (#2042)

• E2E tests are failing on Django 4.2.0 pull request (#1959). We're remove it them but need to add them again.

• E2E tests are randomly failing (~ 1 time out of 4).

Podman test

• The tests only run Docker, not Podman (#1871). We need to add this.

More E2E tests

Add to the E2E tests:

• A Codabench results submission (#2302)
• Another Codabench code submission, typically Mini-AutoML (#2302)
• A failing submission (#2302)
• Several submissions made to the same benchmark
• Multi-task tests are disabled on CI
• Test submission on custom queue
• All tests on codalab/codalab-legacy:py312? It is much lighter

E2E test files:
https://github.com/codalab/codabench/tree/develop/tests/test_files/competitions
https://github.com/codalab/codabench/tree/develop/tests/test_files/submissions

The test:
https://github.com/codalab/codabench/blob/develop/tests/test_submission.py

The templates:
https://github.com/codalab/competition-examples/

Improve E2E

• Wait until Finished or Failed, and then test if Finished. (#2302)

This wait we do not wait in case of failure, and we have more informative tests.

Start with tests/test_submission.py and the fixtures in tests/test_files/competitions and tests/test_files/submissions, then review the linked competition examples. Run the existing E2E tests to understand their current behavior. Done means the remaining listed submission, multi-task, custom-queue, image, and Podman test cases are covered and reliable in CI.