Add tests to pythonpath making test utils importable

- see: pytest-dev/pytest#8964

Author: fselmo

pytest.ini

@@ -1,3 +1,6 @@
 [pytest]
 addopts= -v --showlocals
 xfail_strict=True
+
+# add root dir "." to pythonpath so we can import test utils from /tests
+pythonpath = .