This exception will raise when creating a port with an IP allocated
IP address. This exception needs to be defined in client so that
nova can catch it and perform the error handling.
Needed-By: I5bee9ae18764b6f285ecc5e8d7148a1019c74701
Change-Id: Ie1d4581d334e1ec491e56371c62978945ae24a44
Related-Bug: #1744103