Add an install:app-configuration that only generates yml/json

SEC-220: actually block /login?next=/favicon.ico

Previously we only blocked exact matches to "next=favicon.ico". Now,
we'll also block "next=/favicon.ico" and any other variations.

Update docs on run_migrations.yml

install cached android emu on jenkins workers

Optionally allow user provisioning failures

add override for the ami_id used to launch an instance

Make Vagrantfiles less hard-coded, and more uniformly configurable

SEC-220: Block external logged in checking

Turn discovery docker build back on.

remove pip installs for android utils

that never had any.

This build works now.

This way it'll apply to all locations

We don't want to recreate these files

Rabbit's logs go to /var/log/rabbitmq/ these files are our internal
queue monitoring logs and they will be recreated by
/edx/app/rabbitmq/log-rabbitmq-queues.sh

Without this, we end up with > 10K empty files which makes logrotate and
splunk sad.

E0d/sec 90

Change to wiredTiger

Entrypoint can't be overridden, it should not be used this way.

adding whitespace to improve post merge readability, comments.

removing file included in two branches

adding missed template

missed file

missed rename

rename the file to make our convention

clarifying comment.

Stupid is as stupid does.

whitespace

Define new persistent grades queue

Move docker to 16.04 for the ecommerce app.

Build an elasticsearch docker container from our role.

Use this mechanism to enable a specialized queue.