Fixes and added tests for the security notification worker

Fixes #1301

- Ensures that the worker uses pagination properly
- Ensures that the worker handles failure as expected
- Moves marking the notification as read to after the worker processes it
- Increases the number of layers requested to 100

endpoints/secscan.py

@@ -19,14 +19,5 @@ def secscan_notification():
     abort(400)
 
   notification = data['Notification']
-
-  # Queue the notification to be processed.
-  item_id = secscan_notification_queue.put(['named', notification['Name']],
-                                           json.dumps(notification))
-
-  # Mark the notification as read.
-  if not secscan_api.mark_notification_read(notification['Name']):
-    secscan_notification_queue.cancel(item_id)
-    abort(400)
-
+  secscan_notification_queue.put(['named', notification['Name']], json.dumps(notification))
   return make_response('Okay')