Added job_status property to ExecutionContext

wlauto/core/execution.py

@@ -123,6 +123,12 @@ class ExecutionContext(object):
         else:
             return None
 
+    @property
+    def job_status(self):
+        if not self.current_job:
+            return None
+        return self.current_job.result.status
+
     @property
     def workload(self):
         return getattr(self.spec, 'workload', None)