Update various versions to match build-jenkins.

Django 1.8 doesn't support dry run anymore

E0d/edxapp tags

Move django role template to docker

Playbook to create mongo users

Django 1.8 migration changes for xqueue

Now that XQueue's repo is running on 1.8, we need to use the new syntax
https://docs.djangoproject.com/en/1.8/ref/django-admin/#syncdb

This runs from the local machine and needs to know an IP of any member
of the cluster as well as the replica set.  We can add both of those to
the shim db/edxapp-mongo.yml file in the secure directories easily.

Use Django 1.8 migration command when updating ORA2.

Adding tags to forum role

Adding more tags

Add prefix tags for existing tags in edx_ansible tasks

Tagging tasks to tease out problems with scheme

Install a global mongorc.js

Tag edx_ansible with the appropriate lifecycle tags

Refactor devstack Vagrantfile