Allow certificates to be expanded, now also for "webroot" method

tasks/check-existence.yml

@@ -0,0 +1,16 @@
+---
+- name: Get installed certificates.
+  shell: |
+    {{ certbot_script }} certificates | grep "Domains:" | awk '{ gsub(/    Domains: /,""); print }'
+  changed_when: false
+  register: letsencrypt_certs
+
+- name: Set cert_exists to false (to check if cert exists).
+  set_fact:
+    cert_exists: false
+
+- name: Check if certificate already exists.
+  set_fact:
+    cert_exists: true
+  when: cert_item.domains | sort | difference(item) == []
+  with_list: "{{ letsencrypt_certs.stdout_lines }}"

tasks/create-cert-standalone.yml

@@ -1,19 +1,5 @@
 ---
-- name: Get installed certificates.
-  shell: |
-    {{ certbot_script }} certificates | grep "Domains:" | awk '{ gsub(/    Domains: /,""); print }'
-  changed_when: false
-  register: letsencrypt_certs
-
-- name: Set cert_exists to false (to check if cert exists).
-  set_fact:
-    cert_exists: false
-
-- name: Check if certificate already exists.
-  set_fact:
-    cert_exists: true
-  when: cert_item.domains | sort | difference(item) == []
-  with_list: "{{ letsencrypt_certs.stdout_lines }}"
+- include_tasks: check-existence.yml
 
 - name: Ensure pre and post hook folders exist.
   file:

tasks/create-cert-webroot.yml

@@ -1,8 +1,5 @@
 ---
-- name: Check if certificate already exists.
-  stat:
-    path: /etc/letsencrypt/live/{{ cert_item.domains | first }}/cert.pem
-  register: letsencrypt_cert
+- include_tasks: check-existence.yml
 
 - name: Create webroot directory if it doesn't exist yet
   file:
@@ -11,4 +8,4 @@
 
 - name: Generate new certificate if one doesn't exist.
   command: "{{ certbot_create_command }}"
-  when: not letsencrypt_cert.stat.exists
+  when: not cert_exists