IPv6 Underlay Support

[Valentin Sinitsyn]

This is a stub bug report for the related blueprint submission https://blueprints.launchpad.net/opencontrail/+spec/ipv6-underlay to make CI happy.

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/37210
Submitter: Valentin Sinitsyn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/39168
Submitter: Valentin Sinitsyn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/39168
Committed: http://github.com/Juniper/contrail-specs/commit/6d7b6493d8ba5d5099900c1da279c001ea38c763
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit 6d7b6493d8ba5d5099900c1da279c001ea38c763
Author: Valentine Sinitsyn <email address hidden>
Date: Wed Jan 24 00:12:25 2018 +0500

Add IPv6 underlay support spec

This commit introduces a specification to support IPv6-only underlays
in OpenContrail.

Change-Id: I33ce9fb541767db0788a57f54589e579f0061fab
Partial-Bug: #1730581
Implements: https://blueprints.launchpad.net/opencontrail/+spec/ipv6-underlay
Signed-off-by: Valentin Sinitsyn <email address hidden>