Update for action version. (#104)

See apache/openwhisk#4761.

Author: rabbah

tests/src/test/scala/actionContainers/JavaActionContainerTests.scala

@@ -67,6 +67,7 @@ class JavaActionContainerTests extends BasicActionRunnerTests with WskActorSyste
             |         response.addProperty("api_key", System.getenv("__OW_API_KEY"));
             |         response.addProperty("namespace", System.getenv("__OW_NAMESPACE"));
             |         response.addProperty("action_name", System.getenv("__OW_ACTION_NAME"));
+            |         response.addProperty("action_version", System.getenv("__OW_ACTION_VERSION"));
             |         response.addProperty("activation_id", System.getenv("__OW_ACTIVATION_ID"));
             |         response.addProperty("deadline", System.getenv("__OW_DEADLINE"));
             |         return response;