Added API for network events similar to the one from Domain events

The build breaks with this commits as there are missing bits for the
python binding.
Added python binding for the new network events API
test driver: renamed testDomainEventQueue into testObjectEventQueue
test driver: implemented network events
Add network events unit tests
Renamed remoteDispatchDomainEventSend into remoteDispatchObjectEventSend
Add network events to the remote driver
Added network events to the bridged network driver