add cronjob to vacuum dbs

tasks/main.yml

@@ -31,5 +31,13 @@
   become: true
   with_dict: "{{ postgresql.users }}"
 
+- name: add vacuum cronjob
+  cron:
+    name: db maintenance
+    job: "/usr/bin/vacuumdb --all --analyze > /dev/null"
+    user: postgres
+    hour: 23
+    minute: 26
+
 - name: flush handlers so postgres is ready before other roles try to use it
   meta: flush_handlers