Bug 2026: Fix for Neutron REST API NullPointer exception on POST Port when no fisxed-ips are present

Change-Id: I80e6435add3e0a07f28dbdf37911cd2bc8b263d0
Signed-off-by: Vina Ermagan <vermagan@cisco.com>
Merge "Bug 2026: Fix for Neutron REST API NullPointer exception on POST Port when no fisxed-ips are present"