Build is broken, but someone could fix this.  All they have
to do is fix all of the compile errors and update the hand
shaking logic.

moving counter registration to init() methods, and use of metadata constants

of performace of updates. Introducing hierarchical counters, counter metatdata
and finer-grained handling of counter flush. Added unit tests and changed some
of the API calls

* add methods to update/compare the ports of an IOFSwitch
* use ImmutablePorts
* OFPhysicalPorts -> ImmutablePort in most test

* consolidate store after SLAVE->MASTER transition
* more unit tests for Controller and OFChannelHandler
* fix some issues found while unit testing

bootstrap a cluster without needing to use SyncClient manually
2) Configure sync service to use authenticated connections by default
3) Set up VM with a default set of authentication credentials which
at the moment are simply generated a VM build time.
4) Some improvements to cleanup of netty to avoid leaving around
non-daemon timer threads that prevent clean shutdown.

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

Add support for autobootstrapping a cluster without relying on manul configuration or configuration in cassandra

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.