Comment 4 for bug 1758086

Reviewed: https://review.openstack.org/562304
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=7529627488886f981a4c3d3d7994f92ef7956cee
Submitter: Zuul
Branch: master

commit 7529627488886f981a4c3d3d7994f92ef7956cee
Author: Sylvain Bauza <email address hidden>
Date: Tue Apr 17 15:46:05 2018 +0200

    libvirt: mdevs returning parent and vendor PCI info

    In order to provide inventories per physical GPUs, the libvirt driver needs to
    know the parent ID for each mediated device.
    Also, given we need to limit the max unit of vGPUs per guest to 1 if that's a
    nvidia GPU, we also need to pass the PCI vendor ID down to the driver.

    Related-Bug: #1758086
    Change-Id: Ib80af55ccf4e578e7f8b58531da1b1e95783c779