Fixing require errors on request files
Fixed Models references on Collections
Fix for Constant loading. FogCore always try to find the models inside the Service Namespace
Workaround to fix loading.
This hack is need until the fog-core accepts the Compute namespace to
hold the Service's. FogCore related code can be found in:
https://github.com/fog/fog-core/blob/master/lib/fog/compute.rb#L57