This reverts commit 51ca40a3.

Conflicts:

	src/main/java/net/floodlightcontroller/devicemanager/internal/DeviceManagerImpl.java

Conflicts:

	src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java

Now we will at least get an error message when an Exception occurs
instead of silently killing the thread.
[Forgot to add all files to commit]

Now we will at least get an error message when an Exception occurs
instead of silently killing the thread.

Add 5 seconds for attachment point change from one broadcast domain to another.  When the attachment points flap quickly, the controller should avoid learing the attachment point but should continue processing the packet.

Device manager will have a 5-second time gap to change an attachment point for a host from one broadcast domain to another.

Reduce log level of some messages (https://github.com/floodlight/floodlight/pull/72)

Fix a broadcast issue in looped topologies.

broadcast ARP if cluster doesn't know dst device's AP (https://github.com/floodlight/floodlight/pull/70)

Introduce a convenience method inSameIsland, which is the same as inSameCluster.  In future, they may have different functionalities.

Introduce a method called isConsistent(..) that compares an old attachment and a new attachment point. If the new attachment point is not consistent with the old one, then it has to be learnt by the device manager.

Removing prints not through logger (https://github.com/floodlight/floodlight/pull/69)

Fix a bug for checking BDDP packet if the packet is not unicast for it to continue down the processing chain.

If the incoming node port is blocked, allow only unicast and BDDP packets to continue down the processing chain.

Add a method to TopologyService (https://github.com/floodlight/floodlight/pull/67)

DeviceManager REST API take two (https://github.com/floodlight/floodlight/pull/68)

When the device manager gets cleaned up (or when during topologyChanged), it should consider the time difference between switching from broadcast to non-broadcast attachment points (as they might be previously on two different switches).