Updated openstack/openstack
Project: openstack/neutron  8abac998deea1ca91e2ad405145cac30de3f9ae5

Add functional test for IptablesManager

Introduce test of IptablesManager using filtering of ICMP packets in
namespaces.

Partial-bug: #1243216

Change-Id: I90ab0d397780247de619bd90f5febd0e59b84fc7