HostTracker Fixes
Fixes the following:
Hosts not being added due to SwitchManager
not being set and NullPointerException
Conversion added from Device to HostNodeConnector
REST Service nb/v2/host/default will show hosts
Known problems still need fixing:
- hosts cannot ping each other.
- When mininet is already running and switches are there,
startup for controller is fine. If controller already
running, then mininet started and new switches added,
controller is throwing errors.
- GUI isn't showing hosts in the diagram.
Change-Id: I16290feb269f4bfff8bb0f28e9d5601f0d9b1386
Signed-off-by: Kalvin Hom <kahom@cisco.com>