Updated openstack/openstack
Project: openstack/nova  fd72c308fc6adc1f5d07c5287c1db5bfc12328fc

Maint: neutronclient exceptions from a more appropriate module

When nova wants to use neutronclient exceptions, it should import
neutronclient.common.exceptions, but there are some cases they import
nova.network.neutronv2, which indeed can import neutronclient exceptions,
but may confuse people. This patch fixes them.

Change-Id: Ief388fc631d18c709a629980143d53f240a2ed2b