Using ansible instead of ssh
Seperating out Xqueue and xqueue_consumer restarts
new script for whole course moves
Remove ora since it's old and conflicts with system packages needed by edxapp.
Enable gathering facts so security play works.
Merge pull request #1651 from edx/feanil/remove_ora

Remove ora since it's old and conflicts with system packages needed by e...
Create default mongo users.
Merge pull request #1653 from edx/feanil/mongo_users

Create default mongo users.
Gather facts in edx_ansible play.
Merge pull request #1654 from edx/feanil/more_facts

Gather facts in edx_ansible play.
Merge pull request #1620 from edx/han/jenkins-certs

Using ansible instead of ssh for jenkins scripts
Additional notifier vars and defaults
Merge pull request #1656 from edx/e0d/new-notifier-vars

Additional notifier vars and defaults
Update more vars that need to use $ instead of jinja.
Merge pull request #1657 from edx/feanil/update_jinja

Update more vars that need to use $ instead of jinja.
Creation of MariaDB role with galera cluster option
Create vagrant for building and testing cluster roles
Modify HAProxy defaults to match with vagrant cluster
Also adds MariaDB and elasticsearch to default config