Comment 2 for bug 1484408

Reviewed: https://review.fuel-infra.org/10395
Submitter: mos-infra-ci <>
Branch: openstack-ci/fuel-7.0/2015.1.0

Commit: ec2ef4d7f07ac3d1bfc02d2b678256e85dba64f6
Author: Ann Kamyshnikova <email address hidden>
Date: Thu Aug 13 12:05:15 2015

Fix _reoder_devices method

Added check that even if port exists in port_tags map it has tag.
Also dead ports that are marked with -1 tag will be processed as
other_devices.

This change also contains some refactor that was applied in upstream
and new unittests.

Closes-bug: #1484408

Change-Id: Ifa6a3ba536a5d0e512a995ab99f999efd1d715d7