test: change configuration of the root pytest.ini to run the tests in pytools by default

Author: svalat

pytest.ini

@@ -1,6 +1,6 @@
 [pytest]
 markers=
   default: Test to run by default.
-python_files=./test.py
+python_files="test_*.py"
 junit_logging="system-out"
 junit_log_passing_tests=false