This needs to be configurable... since we recently hardened the rabbit stuff, which meant deleting the guest user. Here's the relevant piece of template/default/nova.conf.erb to copy in:

```ruby
rabbit_userid=<%= @rabbit_user %>
rabbit_password=<%= @rabbit_password %>
rabbit_port=<%= @rabbit_port %>
rabbit_host=<%= @rabbit_ipaddress %>
rabbit_virtual_host=<%= @rabbit_virtual_host %>
```

And here is where the variables are injected in the nova-common recipe:

https://github.com/att-cloud/cookbook-nova/blob/master/recipes/nova-common.rb#L72
https://github.com/att-cloud/cookbook-nova/blob/master/recipes/nova-common.rb#L116

Note the use of the user_password cookbook-openstack-common library routine, which is in version 0.1.5 of that lib (thus the change to the depends in metadata.rb)