rename callback_tasks.py to process_ses_receipts.py

create service_callback_tasks.py for tasks to send delivery statuses to services

app/celery/process_ses_receipts_tasks.py

@@ -0,0 +1,18 @@
+from flask import current_app
+
+from app import notify_celery
+from app.config import QueueNames
+from app.statsd_decorators import statsd
+from app.notifications.notifications_ses_callback import process_ses_response
+
+
+@notify_celery.task(bind=True, name="process-ses-result", max_retries=5, default_retry_delay=300)
+@statsd(namespace="tasks")
+def process_ses_results(self, response):
+    try:
+        errors = process_ses_response(response)
+        if errors:
+            current_app.logger.error(errors)
+    except Exception as exc:
+        current_app.logger.exception('Error processing SES results')
+        self.retry(queue=QueueNames.RETRY)