* Makes the mysql role a dependency of edxlocal
* Moves memcached install into new role
* Installs memcached if EDXAPP_MEMCACHE contains localhost

Whitelisting future_builtins.so for matplotlib

Clean up /edx/var/edxapp/staticfiles before paver runs

When running on a dirty image (such as a sandbox base image or an AMI
build) this clears static files so that collectstatic will copy
everything.

Django's collectstatic copies files and doesn't preserve timestamps,
then only copies "newer modified files".  This leads to a condition
where old static files are in /edx/var/edxapp/staticfiles with a
timestamp of Yesterday, and we add a new dep which comes down from npm
with a timestamp of last week.  Collectstatic will not copy those.

Revert "Revert "WL-451: Clean up ansible services/roles for theming""

use the YAML style parameter passing instead of old style module calls

Arbab/edxapp main rewrite

Feanil/upgrade gocd

This reverts commit 72461609.

Add parens to fix backup script.

SES should use the non-smtp endpoint

Specify path to aws command.

* add splunk searches via ansible

* Fix jinja syntax, add docs

* Add splunk field extractions via ansible

* Use a boolean rather than a number

The fact that splunk uses "1" and "0" to represent booleans is
orthogonal to booleans in yaml. Switching to true booleans for a better
user experience.

* Additional cleanup around splunk searches interface

* Switch splunk role to using common_vars and overrides

This way, we can support environments where we don't, for example, use
datadog.

* Make splunk playbook actually call splunk role

* Fix all the bugs

* Add splunk email config

* Make realtime alerts work

* Add more documentation around splunk alerts

* Address comments

Add affiliate cookie name to ecommerce config

Feanil/remove rabbit ppa

We install the rabbit deb from files.edx.org

I was able to install rabbit and all of its apps at the same
version we have in production without adding the rabbit PPA.

When we update edxapp workers need to be updated too.

Revert "WL-451: Clean up ansible services/roles for theming"

Upgrade GoCD to 16.4.0

Seeing fail: in ansible output is confusing to folks

Updated ECOMMERCE_JWT_SECRET_KEYS

mattdrayer/ecommerce-worker-multisite: Add site-specific overrides

set an overridable SES region name, defaulting to us-east-1

WL-451: Clean up ansible services/roles for theming