Allow configuring cron tasks for deployable website

deployable-website/tasks/website.yml

@@ -64,4 +64,5 @@
     name: "{{item.name}}"
     special_time: "{{item.time}}"
     job: "{{item.command}}"
+    cron_file: "website-{{website.name}}"
   with_items: "{{website.crontasks|default([])}}"