metrics: Add the first (simple) custom metrics

deploy/ansible/playbooks/deploy-c3lf-sys3.yml

@@ -311,6 +311,16 @@
       notify:
         - restart c3lf-sys3
 
+    - name: add c3lf-sys3-cron service
+      template:
+        src: templates/c3lf-sys3-cron.service.j2
+        dest: /etc/systemd/system/c3lf-sys3-cron.service
+
+    - name: add c3lf-sys3-cron timer
+      template:
+        src: templates/c3lf-sys3-cron.timer.j2
+        dest: /etc/systemd/system/c3lf-sys3-cron.timer
+
     - name: reload systemd
       systemd:
         daemon_reload: yes
@@ -321,6 +331,12 @@
         state: started
         enabled: yes
 
+    - name: start c3lf-sys3 timer
+      service:
+        name: c3lf-sys3-cron.timer
+        state: started
+        enabled: yes
+
     - name: add postfix to www-data group
       user:
         name: postfix