Using ppa instead of Ubuntu provided package

tasks/install-with-package-ubuntu.yml

@@ -0,0 +1,3 @@
+---
+- name: Add Certbot-repository
+  apt_repository: repo='ppa:certbot/certbot' state=present

tasks/install-with-package.yml

@@ -1,4 +1,12 @@
 ---
+- name: Load a tasks file based on the OS type.
+  include: "{{ item }}"
+  with_first_found:
+    - "{{ ansible_distribution }}-{{ ansible_distribution_version }}.yml"
+    - "{{ ansible_distribution }}.yml"
+    - "{{ ansible_os_family }}.yml"
+  ignore_errors: true
+
 - name: Install Certbot.
   package: "name={{ certbot_package }} state=present"
 

vars/Ubuntu-16.04.yml

@@ -1 +0,0 @@
-certbot_package: letsencrypt