Conflicts:
	playbooks/roles/common/tasks/main.yml

Feature/jrbl/prod cleanups

* Rename auth_config and env_config to be specific to LMS and CMS
* Minor CMS configuration cleanups elsewhere

* Move sudo:True out of each task and into the playbook, since it's a
  playbook-level variable
* Removal of a couple debian package installs from common that are also
  being installed in the role where they're needed
* Re-correction of /etc/git-identity permissions
* Other cleanups (whitespace issues, etc.)

* Removes HTTP basic auth

* Enable npm role
* Minor edits to debian dependency list
* Change treatment of a few files and directories

* Needs more work, but seems to have many of the basics.

fixed some typos in the README.md file.

Jbau/email tz

Add tagging for ruby tasks, also set PATH so that manual work on

instances is a bit easier.
Also subsumes @sefk's  https://github.com/edx/configuration/pull/42

cloudformation: open tcp/9418 for git

Jarv/better elb rolling