Add timezone setting support.

roles/prereq/handlers/main.yml

@@ -0,0 +1,4 @@
+- name: restart cron
+  service:
+    name: cron
+    state: restarted

roles/prereq/tasks/main.yml

@@ -50,3 +50,9 @@
     path: /etc/sudoers
     validate: 'visudo -cf %s'
   when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux']
+
+- name: "set timezone to {{ timezone }}"
+  timezone:
+    name: "{{ timezone }}"
+  notify: restart cron
+  when: timezone is defined