storage: return job handle in async methods

circle/storage/models.py

@@ -197,7 +197,7 @@ class Disk(TimeStampedModel):
     def deploy_async(self, user=None):
         """Execute deploy asynchronously.
         """
-        local_tasks.deploy.apply_async(args=[self, user],
+        return local_tasks.deploy.apply_async(args=[self, user],
                                               queue="localhost.man")
 
     def destroy(self, user=None, task_uuid=None):
@@ -211,7 +211,7 @@ class Disk(TimeStampedModel):
         return True
 
     def destroy_async(self, user=None):
-        local_tasks.destroy.apply_async(args=[self, user],
+        return local_tasks.destroy.apply_async(args=[self, user],
                                                queue='localhost.man')
 
     def restore(self, user=None, task_uuid=None):