Tracking bug for BGPaaSv2 implementation

Summary of Design

- Add gateway address fields for v4 and v6 to BgpRouterParams
- ST populates these fields in the client bgp-router's properties
- CN parses and processes these fields
- CN makes the gateway address part of RibExportPolicy
- CN updates nexthops for exported routes based on RibExportPolicy

Review in progress for https://review.opencontrail.org/18189
Submitter: Nischal Sheth (<email address hidden>)

Reviewed: https://review.opencontrail.org/18189
Committed: http://github.org/Juniper/contrail-controller/commit/4ada41f32e5bf0de274e07ddd6e773eca55a836f
Submitter: Zuul
Branch: master

commit 4ada41f32e5bf0de274e07ddd6e773eca55a836f
Author: Nischal Sheth <email address hidden>
Date: Fri Mar 4 15:08:31 2016 -0800

BGPaaSv2: Parse and process gateway address for bgp peer

Change-Id: Id4e7e2b26ac1650f0426680af233f924ca630668
Partial-Bug: 1552952

Review in progress for https://review.opencontrail.org/18311
Submitter: Nischal Sheth (<email address hidden>)

Reviewed: https://review.opencontrail.org/18311
Committed: http://github.org/Juniper/contrail-controller/commit/b6cb6c0575d46d0877cf4e944d107ee45b3eeb04
Submitter: Zuul
Branch: master

commit b6cb6c0575d46d0877cf4e944d107ee45b3eeb04
Author: Nischal Sheth <email address hidden>
Date: Mon Mar 7 15:22:46 2016 -0800

BGPaaSv2: Use gateway address in RibExportPolicy

Change-Id: Idd14d97d088b51206646e9a9d8578df14ac5497e
Partial-Bug: 1552952

Review in progress for https://review.opencontrail.org/18357
Submitter: Nischal Sheth (<email address hidden>)

Reviewed: https://review.opencontrail.org/18357
Committed: http://github.org/Juniper/contrail-controller/commit/feeb4238fcad9406f22e611441381d4163f4b471
Submitter: Zuul
Branch: master

commit feeb4238fcad9406f22e611441381d4163f4b471
Author: Nischal Sheth <email address hidden>
Date: Fri Mar 11 11:45:04 2016 -0800

BGPaaSv2: Implement AS override functionality

Consider 2 bgpaas-clients in the same VN that are configured with the
same ASN. Routes sent by one client will not be advertised to the other
client by default since CN implements a sender side AS loop check.

CN needs to implement equivalent of JUNOS as-override knob in order to
work around this issue. RibOut AS is replaced by CN AS in the AS Path.

Pending items:

- Schema and config parsing changes to enable AS override
- Do not advertise routes back to peer even if as override is enabled

Change-Id: I963a8cb6cdbdf4ed27cd18726371e9a8bb19dd39
Partial-Bug: 1552952

Review in progress for https://review.opencontrail.org/18473
Submitter: Nischal Sheth (<email address hidden>)

Review in progress for https://review.opencontrail.org/18506
Submitter: Nischal Sheth (<email address hidden>)

Reviewed: https://review.opencontrail.org/18473
Committed: http://github.org/Juniper/contrail-controller/commit/abfda24015ecb8e5148913c3d5516612885d990a
Submitter: Zuul
Branch: master

commit abfda24015ecb8e5148913c3d5516612885d990a
Author: Nischal Sheth <email address hidden>
Date: Mon Mar 14 09:56:32 2016 -0700

BGPaaSv2: Further progress on AS override implementation

Highlights:

- Schema and config parsing changes to enable AS override
- Implement split horizon check within an eBGP RibOut
- Strip non-transitive attributes when sending routes to eBGP peers
- Tweak resolver to retain IPeer from original BgpPath so that split
horizon check can work for resolved paths
- Make sure that resolved paths don't get deleted prematurely
- Add logic to prevent BgpLifetimeManager from deleting objects when
any resolver tasks are on the wait queue

Change-Id: I2872faf1d382192ea401f1948d842a59bfa0a4a8
Partial-Bug: 1552952

Reviewed: https://review.opencontrail.org/18506
Committed: http://github.org/Juniper/contrail-controller/commit/d3df539bcdc840debf2cec8e71ef43d9918a6627
Submitter: Zuul
Branch: master

commit d3df539bcdc840debf2cec8e71ef43d9918a6627
Author: Nischal Sheth <email address hidden>
Date: Wed Mar 16 17:12:13 2016 -0700

BGPaaSv2: Schema change to suppress route advertisement

Change-Id: I25c6bac0a3c5c6dc1d94084734a85e53de76904c
Partial-Bug: 1552952

Marking as Fix Committed.
New bugs will be opened for any discovered issues.