tree bd77b712c63503810dce267a073875f70144b2ee
parent a78cdb217af25021c31e69cc0d4cf8806eed4830
author Charles Chan <rascov@gmail.com> 1461458170 -0700
committer Gerrit Code Review <gerrit@onlab.us> 1462302592 +0000

CORD-348 Fabric multicast support - error handling

Automatically failover to backup spine if
- ingress - transit link down
- transit - egress link down
- transit device down

Can recover from fatal error with human involved
- ingress switch down
- egress switch down
- all links to spine down

Scan through McastRouteStore when
- SR activate
- link up

Also include following features
- Use flow objective context in McastHandler
- Update Mcast VLAN config sample

Change-Id: I75007d9efd7646e7c4e57fa6d3fc6943543153cf