Add recurring schedule for daily batch scheduler job

Schedule the job to run every day at 2:00 AM London time. We tell
users that we will run the job shortly after 2:00 AM. Running it at
2am means that we can run it in local london time without the risk of
it running twice in the same day when the clocks go forward in March.

Author: stephencdaly

config/recurring.yml

@@ -11,6 +11,9 @@ production:
   receive_submission_deliveries_job:
     class: ReceiveSubmissionDeliveriesJob
     schedule: every 10 minutes
+  schedule_daily_batch_deliveries_job:
+    class: ScheduleDailyBatchDeliveriesJob
+    schedule: every day at 2am Europe/London
 development:
   delete_submissions_job:
     class: DeleteSubmissionsJob
@@ -24,3 +27,6 @@ development:
   receive_submission_deliveries_job:
     class: ReceiveSubmissionDeliveriesJob
     schedule: every minute
+  schedule_daily_batch_deliveries_job:
+    class: ScheduleDailyBatchDeliveriesJob
+    schedule: every day at 2am Europe/London