Add Dockerfile for Selenium Firefox w/mp4 video support

Fullstack memory bumps from ficus that never made it to master.

upgrade node version to 6.11.1

* Insights: webpack instead of r.js, remove bower

* Use node 8 for insights

* Define NPM version to 5.0.4

* Remove extraneous space in nodeenv command

* Revert back to common node & npm version

* webpack-prod.config.js -> webpack.prod.config.js

* Do not run django compress

* Try using latest node version again (8.1.3)

* Revert "Try using latest node version again (8.1.3)"

This reverts commit 3ce0ea4a8181427defe18a99aed8280e8627f731.

* Update CHANGELOG

[ansible-provision.sh] Feed auto auth environment flag into play

Copy pattern for delegating auth to the api, skipping basic auth

remove variable ENABLE_SPLUNKFORWARDER

Pin the discovery version to the release we want

nginx: Make it possible to add custom settings to site configuration for Studio and LMS.

ENT-367: Add BASE_COOKIE_DOMAIN settings for edxapp

ENT-433: Provision a default admin user for developer environments

Adding all defaults required for VIDEO_IMAGE_SETTINGS

EDUCATOR-565 | Add POLICY_CHANGE_GRADES_ROUTING_KEY

fixup download/install logic

The Firefox 45 package is not installable on Trusty due to a missing dependency. Since we are fine with Chrome for ecommerce tests, we will stick with the older version.

LEARNER-509

Firefox: 45.0.2
Chrome: 59.0.3071.115

LEARNER-509

This is a common playbook that enables auto-updates

Update jenkins admin role.

Useful for long lived simple boxes where you want to track security
updates and have users on the machine

Install course-discovery in devstack and fullstack