Quantum-api-error-codes

This blueprint aims at reviewing the way in which the Quantum communicates error codes to clients for the upcoming Essex release.

<networkNotFound code="420" xmlns="http://netstack.org/quantum/api/v1.0">
   <message>
       Unable to find a network with the specified identifier.
   </message>
   <detail>
       Network 8de6af7c-ef95-4ac1-9d37-172f8df33a1f could not be found
   </detail>
</networkNotFound>