[Ansible-service-broker] Update Demo: Preserve data during update of Service Plans

[Jason Montleon]

This YouTube video demonstrates how we are able to preserve data when 
performing plan updates even if the application containers don't 
necessarily have persistent storage.

The demo uses Mediawiki bound to PostgreSQL, but it works just as well 
with MariaDB and MySQL.

https://youtu.be/kslVbbQCZ8s

-- 
Jason Montleon     | email: jmontleo at redhat.com
Software Engineer  | gpg key: 0x069E3022
Red Hat, Inc.      | irc: jmontleo
desk: 978-392-3930 | cell: 508-496-0663