Configure pytest to properly locate conftest.py

In pytest 7.4.0, there were some changes to how the configuration file
for pytest is located. In our case, this resulted in a failure to find
the conftest.py with the needed fixtures which then prevented our python
tests from being executed successfully.

Configure the --confcutdir to ensure it points to the system test
directory, where our conftest.py is located.

Related pytest-dev/pytest#11043

bin/tests/system/run.sh

@@ -237,7 +237,7 @@ if [ $status -eq 0 ]; then
             if start_servers; then
                 run=$((run+1))
                 test_status=0
-                (cd "$systest" && "$PYTEST" -rsxX -v "$test" "$@" || echo "$?" > "$test.status") | SYSTESTDIR="$systest" cat_d
+                (cd "$systest" && "$PYTEST" --confcutdir ../ -rsxX -v "$test" "$@" || echo "$?" > "$test.status") | SYSTESTDIR="$systest" cat_d
                 if [ -f "$systest/$test.status" ]; then
                     if [ "$(cat "$systest/$test.status")" != "5" ]; then
                         test_status=$(cat "$systest/$test.status")