Add cron for deleting old notifications from DB (#50)

Merge branch 'master' into kris/clear_old_notifications

Add cron for deleting old notifications from DB

Co-authored-by: jonathan <jonathan@noreply.git.bubblev.org>
Co-authored-by: Kristijan Mitrovic <kmitrovic@itekako.com>
Reviewed-on: #50

bubble-server/src/main/resources/packer/roles/bubble/tasks/postgresql.yml

@@ -29,3 +29,10 @@
     group: postgres
     mode: 0400
   when: install_type == 'sage'
+
+- name: Install notifications tables' cleaner cron
+  cron:
+    name: "Cleaning notifications tables"
+    special_time: "hourly"
+    user: "postgres"
+    job: "HOUR_AGO=$(date -d '1 month ago' +\"%s000\") && psql -d bubble -c \"DELETE FROM sent_notification WHERE mtime < ${HOUR_AGO}\" -c \"DELETE FROM received_notification WHERE mtime < ${HOUR_AGO}\""