Updated openstack/openstack
Project: openstack/neutron  a7bdec1a31ffcc5a65f1802ed93c04d1cf2ace68
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Add support for NSX/NVP Metadata services

This is a feature patch (2 of 3) that adds support for
Metadata services provided by the NSX (aka NVP) platform.

It also implements the handling of port events so that
dhcp and metadata configuration in NSX/NVP is updated
if port attributes such as fixed_ips and device_id are
updated.

Partial-implements blueprint nsx-integrated-services

Change-Id: Id2b9125b49c0e15e717605ec6ba3dea5d32ee755