Replace test_conversation_v1.py with generated test stubs
Replace test_conversation_v1.py with generated test stubs

This commit replaces the existing, handwritten `test_conversation_v1.py` file with a generated `test_conversation_v1.py`.

The tests were generated using the WatsonPythonCodegen.

The generated tests are not in working state—they must be manually modified before they can be executed.

ehdsouza/python-sdk,ehdsouza/python-sdk,ehdsouza/python-sdk