There is some work outstanding before this is ready but I believe
it's complete enough to merge.  There will be more logic added
to sanitize and change the db password after the clone is complete

checking change set length doesn't work

adding play mappings for the commoncluster

Allows override of nginx configuration templates via simple variable

update devstack port forwarding for comments service and elasticsearch

`hostname` -> {{ansible_hostname}}

Update main.yml

E0d/preview

Kibana and logstash roles

Updating DNS script for multiple accounts in the edx.org zone

This PR makes the following changes:

* Defaults to the edx.org zone instead of a vpc zone
* Takes an AWS id and secret to query another account for instance info
* Adds some safe guards around duplicate dns entries
* Creates an ban list for elbs

make `bundle install` stop requiring a password in /edx/app/forum

adding hipchat to top-level req file, pinning ver

Adding bash wrapper for hipchat feature

Fixes to abbey external playbook support