The nginx configuration was set to pass X-Forwarded-For and related headers
unodified to backend services.
This works fine when nginx is deployed behind another load balancer
(for example ELB), which already properly sets the X-Forwarded-* for headers.

But in simpler deployment scenarios, where nginx is directly facing the end user,
nginx should discard any existing X-Forwarded-For headr and set it to remote IP of the request,
the X-Forwarded-Port header to the nginx server port, and the X-Forwarded-Proto
to the scheme of the current request.

The 'NGINX_SET_X_FORWARDED_HEADERS' is set to False by default, but set to True
in the edx_sandbox playbook, where an additional load balancer in front of nginx
is not usually present.

Add new settings that were added to edx-platform.

Updates to get alton to work on the admin instance.

Updating local ec2 module

Splunk improvements

Correct the default version of alton.

This doesn’t need to be a directory, it can be just a file (globing also
works).
See http://docs.splunk.com/Documentation/Storm/Storm/User/Editinputsconf

When downloading the deb from splunk’s website, it doesn’t have that
format.
See: http://www.splunk.com/download/universalforwarder

Jenkins_master role: add datadog

When using datadog on Jenkins, it should include datadog's provided Jenkins capabilities.

Includes jenkins-specific datadog concfiguration

edxapp user typo

Coding conventions, puting spaces in front of {{ and changing ${ vars

Update vagrant images to support vmware providers

another when condition syntax error

syntax error on the when condition

fixing typo again, using correct name

fixing extra_var_args

use deployment, not environment

Jarv/diff and check

In order to support --check we need to ensure that registered
vars exist before checking their stdout. Otherwise ansible
errors out.

Have roles reference the nginx role for basic auth

make aide send reports to syslog.

Feanil/alton redis