test setup cleanup / bugfixes

[bghira]

This pull request adds significant improvements to the test suite and configuration for the orchestrator and worker components. The main changes include the addition of a new test configuration file for orchestrator and vLLM settings, enhanced test coverage for worker shutdown and post-execution hook behaviors, and improved pytest settings for more robust and clear testing.

Configuration and Orchestrator Enhancements:

• Added a new test-config.yml file with comprehensive orchestrator, vLLM, storage, and authentication settings to facilitate testing and local development.

Testing Improvements:

• Added new tests to tests/test_cli.py to verify that worker shutdown and post-exec hook behaviors can be configured and overridden via config files and CLI parameters. These tests also ensure proper validation and error handling for post-exec hook requirements.
• Extended tests/test_worker_caption.py with tests for post-exec hook execution, including successful execution, failure handling, exception handling, and full coverage for the WhenFinished enum.
• Improved assertion formatting in tests/test_worker_caption.py for clarity in test failures.

Test Framework Configuration:

• Introduced a pytest.ini file to standardize pytest behavior across the project, including asyncio settings, warning filters, and test discovery patterns.