ansible-playbooks/general#18 Optimize include/loop for letsencrypt certificates

tasks/cert.yml

 ---
 # file: roles/letsencrypt/tasks/cert.yml
 
-- set_fact: cert={{ item }}
-- set_fact: cert={{ item.1 }}
-  when: item.1 is defined
+- set_fact: cert={{ domain.1|default(domain) }}
 
 - name: "Write Config"
   template: