Intial set of changes for adding HA support in agent :HSRP
Further changes for HA support (HSRP) in the agent
Merge remote-tracking branch 'cisco/bobmel/savvis_poc_n7k' into savvis_poc_n7k
Add missing CONF define. Merge commit
Update scripts to support both Grizzly and Havana, Icehouse.

Change-Id: I9e7f8122d9e780f281bddb4dc9040e1fd3005511