Event based smoke tests -- manged jobs

[zpoint]

This PR adds support for event based testing for managed jobs. And modify some test cases to be event based.

This is the following PR of https://github.com/skypilot-org/skypilot/pull/4284, refer to the link for more detail

Tested (run the relevant ones):

• [ ] Code formatting: bash format.sh
• [ ] Any manual or new tests for this PR (please specify below)
• [ ] All smoke tests: pytest tests/test_smoke.py
• [ ] Relevant individual smoke tests: pytest tests/test_smoke.py::test_fill_in_the_name
• [ ] Backward compatibility tests: conda deactivate; bash -i tests/backward_compatibility_tests.sh

[zpoint]

Hi @romilbhardwaj , Since the original PR was merged, I've submitted this new one based on the current master. Could you help review it? It's the same PR as the closed one you already reviewed, just with a different base branch.