CIMI: Removed debug statements from AddressCollection
Core: Fixed Rabbit namespacing issues with Addresses (DTACLOUD-500)

NOTE: A sinatra-rabbit >= 1.15 is required to make this work and to
fix the bug.
Core: Change prefix for the Sinatra::Rabbit classes

Sinatra::Rabbit for CIMI is now CIMI::Rabbit
Sinatra::Rabbit for Deltacloud is now Deltacloud::CIMI
CIMI: Added VolumeImageCreate model
CIMI: Fixed typo in volume_image column name in database
CIMI: Added VolumeTemplateCreate model
Core: Added possibility to run filter_on with multiple attrs

So instead of writing:

instances = filter_on instances, :id, opts
instances = filter_on instances, :realm_id, opts
instances = filter_on instances, :state, opts

You can now use:

instances = filter_on instances, opts, :id, :realm_id, :state

The backward compatibility with old filter_on included.
Mock: Cleanup in MockDriver code

- Removed obsoleted 'requires' (yaml, base64, etc)
- REALMS moved to 'realms' method
- @@METRICS_NAMES moved to Metric model
- Revamped 'filter_on' methods
- Next 'id' generation moved to separate method

a lot of small changes...