Neutron Compatability:
- added right bottle error codes for failures
- added validation functions needed for tempest tests
- net-list will now return subnet-id list instead of subnet-dict

Change-Id: Iaa7d61521f1a1e51e732af0b1d86d5a0e1569768
Merge "Neutron Compatability: - added right bottle error codes for failures - added validation functions needed for tempest tests - net-list will now return subnet-id list instead of subnet-dict"