updating deploy script for jenkins
cert->certs
removing deploy tag from non-deploy task

This causes a problem when you run `--skip-tags deploy`
Refactoring to support new supervisor config.
factoring out common vars into a separate file
factoring out common vars
comment block
use WORKSPACE if it exists for jenkins
General clean-up.
updating provision script to consolidate provisions and deploys
adding commit versions to common var file
extra cd
gh_users is just a list of users, not a dict
fixing names of tasks in launch_ec2
Add the ability to run plays on the leader in a tag group before running it on the rest.
Move to use the new role ec2 tag.
Leave only the forums related roles on the forums server.
Run user creation on condition.

Meant to be used in plays where we use the 'first_in_tag' host vars to only run usercreation on one machine.
Put overrideables in all caps.
Add the mongo plays.