Comment 19 for bug 1498765

Reviewed: https://review.opencontrail.org/14030
Committed: http://github.org/Juniper/contrail-controller/commit/19bb7bd7806db03242f4bd2f183f19ed353802b6
Submitter: Zuul
Branch: master

commit 19bb7bd7806db03242f4bd2f183f19ed353802b6
Author: Ananth Suryanarayana <email address hidden>
Date: Wed Oct 7 01:18:53 2015 -0700

Add support to exchange load-balance bgp extended community

Also addressed review comments from Nischal

o Exchange list of fields to hash upon during ecmp load-balancing
o Fields: L2 Source Address, L2 Dest Address, L3 Source Address, L3 Dest Address,
L4 Protocol, L4 Source Port, L4 Dest Port
o Room for future load-balance fields addition such as interface
o Additional actions field such as source_bias boolean
o Room for future actions such as urpf
o This info is sent to agents via xmpp
o This info is sent to other bgp peers via opaque extended community

o Cleanup hard-coded extended community types with defines

Change-Id: I22371305eb9721ed621979f53382f1fdc495fc1b
Closes-Bug: #1498765