Adding backup flag for config files

roles/haproxy/tasks/main.yml

@@ -102,6 +102,7 @@
     src: "{{ item }}"
     dest: /etc/haproxy/maps
     mode: 0644
+    backup: true
   with_fileglob:
     - "maps/*"
   notify: reload haproxy
@@ -124,6 +125,7 @@
     dest: /etc/haproxy/haproxy.cfg
     mode: 0644
     validate: haproxy -f %s -c -q
+    backup: true
   notify: reload haproxy
 
 - name: Ensure HAProxy is started and enabled on boot.