Merge pull request #1469 from Unity-Technologies/release-v0.6-tick-version-test-fix

Ticked the version in the tests

ml-agents/tests/mock_communicator.py

         )
         rl_init = UnityRLInitializationOutput(
             name="RealFakeAcademy",
-            version="API-5",
+            version="API-6",
             log_path="",
             brain_parameters=[bp]
         )