Add cron to update pihole

hosts

@@ -4,9 +4,11 @@ dns:
     dns_1:
       ansible_host: 192.168.1.3
       sync_target: 192.168.1.4
+      update_weekday: 1
     dns_2:
       ansible_host: 192.168.1.4
       sync_target: 192.168.1.3
+      update_weekday: 2
 proxy:
   hosts:
     proxy_1:

roles/pihole/tasks/main.yml

@@ -52,6 +52,14 @@
     cmd: /tmp/basic-install.sh --unattended
     creates: /usr/local/bin/pihole
 
+- name: Schedule upgrade
+  cron:
+    name: schedule upgrade
+    weekday: "{{ update_weekday }}"
+    hour: 3
+    minute: 0
+    job: /usr/local/bin/pihole -up
+
 - name: Create gravity directory
   file:
     path: /etc/gravity-sync