Set https and allow to override

plays/lib/prepare.yml

@@ -4,6 +4,7 @@
 # already (due to the order of the tasks we define for our deployment steps)
 - name: Export variable placeholders
   set_fact:
+    https: true
     dokku_mariadb_db_addr: "dokku-mariadb-{{ app }}"
     dokku_mariadb_db_user: "mariadb"
     dokku_hostname: "{{ lookup('file', '/home/dokku/HOSTNAME') }}"

plays/post_deploy.yml

@@ -16,7 +16,7 @@
 
     - name: Include https tasks
       include: ./lib/https.yml
-      when: https is defined and https == true
+      when: https
 
     - name: Include proxy tasks
       include: ./lib/proxy.yml