Merge changes Iab34da39,Ie1fed36e,Ifa883bf1,I21d7394e,I9ef865d0

* changes:
  Better instructions for analytics.py
  Fixed getDestinationHostFromFlow to deal with NW_DST field (+ removed print statements from integration test)
  Code for demo-ing AffinityLink statistics Signed-off-by: Katrina LaCurts <katrina.lacurts@plexxi.com>
  Added northbound methods for AffinityLink statistics
  Changed northbound URLs and incorrect reference to the affinity RS applications