Conflicts:
	bigfloodlight/src/main/java/com/bigswitch/floodlight/BigOFSwitchImpl.java
	floodlight/src/main/java/net/floodlightcontroller/core/OFSwitchBase.java
	floodlight/src/main/java/net/floodlightcontroller/core/internal/Controller.java
	floodlight/src/test/java/net/floodlightcontroller/util/OFMessageDamperMockSwitch.java

Work in progress. Code and testing is in, some plumbing still missing.

Conflicts:
	bigfloodlight/src/main/java/com/bigswitch/floodlight/tunnelmanager/TunnelManager.java
	floodlight/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java
	floodlight/src/main/java/net/floodlightcontroller/topology/TopologyManager.java

 * Move to separate restletroutable out of core
 * Remove GET handlers that modify internal state
 * POST handler that can reset, enable, or disable the counters

Necessary step for switch sync. We can't use
IFloodlightProvider.getSwitches() anymore. We now have a getSwitch()
method. There are also methods to get all dpids (getAllSwitchDpids())
and to get a map (getAllSwitchesMap()). These two return a snapshot.
TODO: need to check if they are used under the correct assumption in
existing code.

First stab at SwitchSyncRepresentation, which is the object I indent to
put in the SyncStore.

This reverts commit 2dae941efe4bff9bf6a99ab7e3932fa2c74f8139, breaks json contract

Conflicts:
	bigfloodlight/src/main/java/com/bigswitch/floodlight/BigOFSwitchImpl.java
	floodlight/src/main/java/net/floodlightcontroller/core/OFSwitchBase.java
	floodlight/src/main/java/net/floodlightcontroller/core/internal/Controller.java

This is a first big chunk of changes and work in progress. It's not
fully tested yet.
* The OFChannelHandler has be factored out into a separate file.
* State handling is now structured by the current channel state. We
implement the state machine as enum. The enum values are the discrete
states and the "events" of the state machines are member methods of the
enum values.
* Changing roles has been localized in the OFChannelHandler, we perform
timeout checking (no reply to role request) opportunisticly when we
receive any OF message. This way we don't need to complex RoleChanger
thread with task queue.

Conflicts:
	bigfloodlight/src/test/java/com/bigswitch/floodlight/tunnelmanager/TunnelManagerTest.java

BSC-3484: Master not always handling EPERM error (https://github.com/bigswitch/bigswitchcontroller/pull/3085)