Fixed problem when you have two collections with same name
but loaded under different namespace

Rabbit::config do
  enable :use_namespace
end

Will cause to extract the 'base' module from class name and
then put all collections into that namespace. So for example:

CIMI::Collections::Addresses => CIMI::Rabbit::AddressesCollection
Deltacloud::Collections::Addresses => Deltacloud::Rabbit::AddressesCollection