[BSC-2136] Don't update switch/port table on SLAVE. (https://github.com/floodlight/floodlight/pull/225)

Forgot to add updatesThread and doUpdatesThread(), during the re-write. Topology computation was never called without this.

Updates to link discovery manager.

Reduce log level of a number of log messages (https://github.com/floodlight/floodlight/pull/222)

Update to link discovery manager.  LLDPs are sent every one second; with a three second timeout on ports where links were already found.  On ports where links are not present, LLDPs are sent once in every 15 seconds.

BSC-1846 	Read address-space config from storage

enhancement in NodePortTuple class (https://github.com/floodlight/floodlight/pull/219)

Add some extra debugs to switch handshake in Controller.java. (https://github.com/floodlight/floodlight/pull/220)

Remove dead code and fix a bug in flowToDevice conversion (https://github.com/floodlight/floodlight/pull/217)

 	Greatly enhance the information returned by the controller switch REST API (https://github.com/floodlight/floodlight/pull/216)

Flow Reconciliation API refactor.

Clear all links in storage when transitioning to HA Master role. (https://github.com/floodlight/floodlight/pull/214)

Updated instrumentation for [BSC-2134] (https://github.com/floodlight/floodlight/pull/213)

Change methods in DeviceManagerImpl from private to protected. (https://github.com/floodlight/floodlight/pull/212)