releng: Use template instead of copy for purge-amis

Signed-off-by: Sayan Chowdhury <sayan.chowdhury2012@gmail.com>

roles/releng/tasks/main.yml

@@ -169,10 +169,9 @@
 
 # put cron job in for purging nightly amis
 - name: purge nightly amis cron
-  copy: src="purge-amis" dest=/etc/cron.d/purge-amis
+  template: src=purge-amis.j2 dest=/etc/cron.d/purge-amis
   when: inventory_hostname.startswith('compose-x86-01')
 
-
 - name: install compose /etc/httpd/conf.d/compose.conf file
   copy: >
     src="compose.conf"