Comment 80 for bug 1636654

Reviewed: https://review.opencontrail.org/41263
Committed: http://github.com/Juniper/contrail-controller/commit/6cbdbc52a2d24a46c2befdb50719ee2b137bb9a5
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit 6cbdbc52a2d24a46c2befdb50719ee2b137bb9a5
Author: Manish <email address hidden>
Date: Fri Feb 16 17:12:49 2018 +0530

Agent changes: VXLAN Routing/EVPN type-5 support.

Agent uses EVPN type 2 routes to pick up the locally created routes
(i.e. VM) and re publish same in following tables:
- Inet table of L2 VN - redirect to l3 vn.
- Evpn table of L3 VN(routing VN) - IP with zero mac, exported to CN.
- Inet table L3 VN - Used for forwarding after routing.

Vxlan routing knob is based on following:
- vxlan routing knob in project
- linking of l3 vn(routing VN) to logical router

Depends-On: I0aa35f774bab5f756c0d72ab2088c033356de747
Implements: blueprint https://blueprints.launchpad.net/opencontrail/+spec/evpn-type-5
Partial-bug: 1636654

Conflicts:
 src/vnsw/agent/oper/agent.sandesh
 src/vnsw/agent/oper/nexthop.cc
 src/vnsw/agent/oper/tunnel_nh.h
 src/vnsw/agent/oper/vn.cc
 src/vnsw/agent/oper/vn.h
 src/vnsw/agent/vrouter/ksync/nexthop_ksync.cc

Change-Id: Iea9018390612dd5d48fde3fbb4d5ce6ae2dce141