_device_to_port_id broken for many devices

[Kevin Benton]

The _device_to_port_id method in ML2 accepts either an interface name, a port UUID, or a MAC address and returns the corresponding port ID.

The part that takes an interface name currently only works if the interface prefix is 'tap'. This is broken in the cases where security group filtering is used ('qvo' prefix) and snat interfaces ('sg-').

This is okay in the cases where the external id is loaded directly into the database, but it doesn't work for vswitches that don't have OVSDB or when scripts have re-added the interface to the vswitch without the external ID.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/173137

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/173137
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=3e4e932a4d9dbfac908cf03c221b350e645d8b17
Submitter: Jenkins
Branch: master

commit 3e4e932a4d9dbfac908cf03c221b350e645d8b17
Author: Kevin Benton <email address hidden>
Date: Mon Mar 30 11:29:44 2015 -0700

    Fix _device_to_port_id for non-tap devices

    This adjusts the _device_to_port_id function in ML2
    to recognize other interfaces that belong to Neutron
    under different name prefixes.

    Adds unit tests to achieve full converage of _device_to_port_id
    method.

    Closes-Bug: #1443710
    Change-Id: I80284ee67e5876cf5689e49e1592ca1351ae5fa1

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: neutron-pecan
Review: https://review.openstack.org/185072