added a role variable to set global certbot options in configuration file

tasks/config-file.yml

@@ -0,0 +1,10 @@
+---
+- name: Ensure configuration directory is present.
+  file:
+    path: /etc/letsencrypt
+    state: directory
+
+- name: Install Certbot configuration file.
+  template:
+    src: cli.ini.j2
+    dest: /etc/letsencrypt/cli.ini

tasks/main.yml

@@ -7,6 +7,8 @@
 - import_tasks: install-from-source.yml
   when: certbot_install_from_source
 
+- import_tasks: config-file.yml
+
 - include_tasks: create-cert-standalone.yml
   with_items: "{{ certbot_certs }}"
   when: