tests: add pytest.ini to set asyncio_default_fixture_loop_scope

Recent versions of pytest-asyncio emit a deprecation warning when the
'asyncio_default_fixture_loop_scope' option is unset. This can break tests
using pytester by preventing pytest from generating a terminal summary.

This commit adds a pytest.ini file with
'asyncio_default_fixture_loop_scope = function' to prevent the warning,
ensuring that tests run reliably and the pytest output is stable.

Signed-off-by: Maxim Tulskiy <tulskijms@altlinux.org>

Author: Maxim Tulskiy

pytest.ini

@@ -0,0 +1,2 @@
+[pytest]
+asyncio_default_fixture_loop_scope = function