Updated openstack/openstack
Project: openstack/python-neutronclient  91bea9479d8b3ab4912c4b4c5e03f05e67b81a5a

Suppress expected help messages caused by wrong CLI inputs

There are negative tests for the NSX gateway feature. This
patch introduces the ability to suppress the warning messages
caused by running commands with wrong parameters. This keeps
the console output clean of spurious errors.

Change-Id: Idc78442969b3e06ecef9999a7edfc6544ed3a376
Closes-bug: #1311348