[#28337615]

Controller now needs to listen for storage notifcation and it will
dispatch updates if the controller node IPs change.

We now have three different types of updates in the Controller.updates
queue ==> Refactored to use different update classes that implement a
common IUpdate interface instead of a several types and a switch
statemet.

Add unit test for Controller.updates queue

Retab that caused some unrelated chagnes but now now more tabs:
    flconext, addInfoProvider, removeInfoProviderm getControllerInfo

Retab also causes changes in flcontext: that's only indentation.

Needed to touch quite some files to refactoring: rename
IHARoleListener -> IHAListener

[#29035681]

Add some additional unit tests and change error status to null from NONE.  Some minor serializer cleanup

Add a debug REST API to get raw device entities.  Fix attachment point blocking code and make it appear in the REST output

Note: Switch stats don't update yet...not sure why...coming next.

topology viewer was dying if floodlight had not yet discovered
an IP address for every host.

Removing a couple placeholders unlikely to be filled in for the near future.  Would be great to get uptime but have no api for it right now.

Change host/switch identification to use IDs instead of names in web topology view.  Add last seen host IP address.

minor toString fix in Device

2 - Move the learning switch table outside of the IOFSwitch and into the LearningSwitch module.
3 - Create a REST API for the LearningSwitch module to get the learned table. Available at "/wm/learningswitch/switch/{DPID or 'all'}/json".

Correct race condition in device learning and topology, remove deviceManager from listening linkEvent