Add unit 7

app.py

@@ -197,6 +197,15 @@ def test_(hf_username):
           "best_model_id": "",
           "passed": False
     },
+      {
+          "unit": "Unit 7",
+          "env": "ML-Agents-SoccerTwos",
+          "library": "ml-agents",
+          "min_result": -100,
+          "best_result": 0,
+          "best_model_id": "",
+          "passed": False
+    },
   ] 
   for unit in results_certification:
     # Get user model