Merge pull request #43 from retr0h/working

Removed deps on openstack-utils
Fix rabbitmq IP address generation
Merge pull request #44 from att-cloud/rabbit_addr_fix

Fix rabbitmq IP address generation
Rework rabbit IP generation

Make it consistent with the rest of the openstack cookbooks.
Skip image upload if it already exists
set workers equal to nCPU as per recommendations
Merge pull request #46 from alop/workers

set workers equal to nCPU as per recommendations
Merge pull request #45 from att-cloud/rabbit_addr

Rework rabbit IP generation
Merge pull request #47 from att-cloud/maoy

Skip image upload if it already exists
Another attempt at fixing multiple image uploads.