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

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

Removing duplicate tag definition

Updating based on CR, and adding highlevel tag until wildcards exist.

Right now, users need to type rs.slaveOk() after running a read-replica
mongo script.  This avoids that.  It is compatible with anyone who also
has a ~/.mongorc.js

E0d/cherry pick tagging

OPS-631: Upgrade to the latest version of python

A base box with python 2.7.10 and django 1.8

Mount a src directory for ad-hoc use.

When developing on devstack, it's useful to have a way to share source
trees between the host and the guest OS. The src directory is for this
sharing, so that working trees can be accessed inside the guest OS.

Use the dogwood alpha1 box

Fix the HTTP-to-HTTPS redirect on sandboxes

modify the key to NGINX_SET_X_FORWARDED_HEADERS

added the http to https fix to all the nginx profiles

Make sure edxapp user can write to the data dir in devstack.

They released a new version