Updated go-agent dockerfile to override start script so container process captures the correct GO_SERVER_PORT

hackathon documentation updates

Restore ecommerce roles to analytics devstack

Added OAUTH2_ACCESS_TOKEN_URL setting to discovery service

Increasing file descriptor limit (OPS-728)

use dogwood box for release analyticstack Vagrantfile

Fix a bug in the git module: branches might not check out properly

OLIVE-19 Enable automatic provisioning of jenkins instance dedicated to running analytics tasks. 

ECOM-3895

This has caused confusion in the past. Updated the value to actually be the OAuth2 endpoint, rather than the LMS host.

ECOM-3895

ECOM-3895

If a git version is specified as a branch, and the commit referred to is
already on the local working tree, but the branch is not, then the
checkout will fail.

This is because the Ansible 1.9.3 module would check to see if the
commit was already present, and if so, did not fetch. This meant the
branch wasn't defined in the local working tree.

This can happen if you make a branch but there aren't any changes on the
branch.

Add install of curl to oraclejdk role & improve documentation.

programs: defaults and overrides for media storage

This jenkins instance will perform following tasks:

* Set up authentication using Jenkins Unix Auth Realm
* Set up administrative user
* Load credentials from a JENKINS_ANALYTICS_CREDENTIALS variable
* Checkout seed job repository
* Launch seed job to populate Jenkins with analytics Jobs

ECOM-3895

ECOM-3196

Get rabbit ready before we start workers

Discovery was missed during the initial ansible work

This let a machine boot without migrations running.

use django's storage backend ManifestStaticFilesStorage for static fi…

ECOM-3905

Upgrade go server and agent java version.