update apt cache before once before running the ansible roles

Author: tknerr

site.yml

@@ -1,5 +1,12 @@
 ---
 
+- hosts: localhost
+  tasks:
+    - name: update apt cache before running any of the ansible roles
+      apt:
+        update_cache: yes
+        cache_valid_time: 3600
+
 - hosts: localhost
   roles:
     - { role: readme, tags: "readme" }