Replace include_tasks with include again if used in a loop

tasks/main.yml

@@ -16,7 +16,7 @@
 - block:
 
   - name: "Install Certs"
-    include_tasks: '../../letsencrypt/tasks/cert.yml'
+    include: '../../letsencrypt/tasks/cert.yml'
     with_items: '{{ proxy_certificates|default([]) }}'
     loop_control:
       loop_var: domain