Add the exposure of relationships to other models to Automate service models

for Cloud resources like Availability Zones, Cloud Network, Floating IPs
    
https://bugzilla.redhat.com/show_bug.cgi?id=1131591
Minor but this leading blank line shouldn't be here nor in the other files.

Total aside, but is this a vim thing?  I noticed all of the vim users end up doing this for some reason.