Comment 12 for bug 1773981

Reviewed: https://review.opencontrail.org/43359
Committed: http://github.com/Juniper/contrail-nova-vif-driver/commit/208f0d51b6e0c1c44771e96c062588a40491b09d
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit 208f0d51b6e0c1c44771e96c062588a40491b09d
Author: Jan Gutter <email address hidden>
Date: Tue May 29 14:50:45 2018 +0200

Build skeleton for 'vrouter' os-vif plugin

The current os-vif plugin operates on the contrail_vrouter VIF type.
This means that the only plugging mode supported is the vhost-user
method with the DPDK datapath.

This changeset renames the 'contrail_vrouter' plugin back to 'vrouter'
and adds a small shim for a 'contrail_vrouter' plugin. The
'contrail_vrouter' plugin will be a strict subset of the 'vrouter'
plugin, supporting only the vhost-user datapath for backwards
compatibility.

This changeset clones the existing unit tests to the 'contrail_vrouter'
plugin, ensuring that the interfaces can be maintained as work progresses
on the 'vrouter' plugin.

This changeset also cleans up a number of PEP8 issues and
failing unit tests in the current os-vif plugin:

* Whitespace issues
* Import ordering
* Filling in proper UUID's in tests
* Better handling of exceptions when config is not available

Change-Id: Ica76793e7977616236b07efbfaa115fe85c97fab
Partial-Bug: #1773981
Signed-off-by: Jan Gutter <email address hidden>
Acked-by: Frikkie Scholtz <email address hidden>