I'm using pytest-asyncio and want to set a default event loop scope for all my asynchronous tests. What is the configuration option to achieve this, and how would I typically configure it in a `pytest.ini` file to use a 'session' scope?
Navigate to the pytest-asyncio documentation at pytest-asyncio.readthedocs.io. Go to the 'How-To Guides' section. Locate and navigate to the guide titled 'How to change the default event loop scope of all tests'. Identify the configuration option mentioned for changing the default event loop scope for all tests. Identify the example configuration for `pytest.ini` that sets the scope to 'session'. State the configuration option and the example `pytest.ini` configuration.
Confirm that the information is found within the 'How-To Guides' section of the pytest-asyncio documentation. Identify and state 'asyncio_default_test_loop_scope' as the configuration option for changing the default event loop scope of all tests. Provide the `pytest.ini` configuration snippet that sets the `asyncio_default_test_loop_scope` to 'session'.