Fix tournament tests and ensure deterministic results

Author: Mike014

axelrod/tests/integration/test_tournament.py

@@ -101,7 +101,9 @@ def test_repeat_tournament_deterministic(self):
             #     "test_outputs/stochastic_tournament_{}.csv".format(_)
             # )
             # MG: Changed to use right filename "deterministic_tournament_{}.csv"
-            path = pathlib.Path(f"test_outputs/deterministic_tournament_{_}.csv")
+            path = pathlib.Path(
+                f"test_outputs/deterministic_tournament_{_}.csv"
+            )
             # MG: Control for file existence before new execution
             if path.exists():
                 path.unlink()