This modifies the edx_ansible role to dump a clean var
file on disk that can be used for subsequent update runs
so that config vars will not be lost

also changes the ansible tmp directory to /var/tmp which is a better
location than using $HOME (used for debugging mostly)

LMS conf should switch on LMS not CMS.

always show extra vars

Only set the lms as the default.

Added mirrored queues for clusters and VHOST support to rabbitmq

adding mongo updates to the abbey script

Remove non-existent 'splunk' group when creating user

Update edx-west plays with new nginx variables.

Set a default value for default_site.

CMS should not be default.

When 'splunk' group doesn’t exist yet, ansible fails when creating the
user. Leaving it empty will create the group anyway.

Add nginx roles to plays and add new plays.

Added new plays for splunkforwarder and datadog and added
nginx to the xqueue, xserver, and edxapp plays.

Feanil/cloudformation elastic search

USE_CUSTOM_THEME

bugfix: merge 2 when: clauses

Sets up codejail

set startsecs param in xqueue supervisor conf