Change openflowswitch monitoring capability type to ofmonitoring.

There was already one capability with that type (in ROADM), which was causing confusions.
Support null switch statistics from floodlight.
Improve logging for NCLMonitoring not finding netstatistics.
Change openflowswitch monitoring capability type to ofmonitoring.

There was already one capability with that type (in ROADM), which was causing confusions.
Update openflowswitch sample descriptor.
Support null switch statistics from floodlight.
Merge pull request #927 from isartcanyameres/fix/floodlight-driver-get-null-statistics

Support null switch statistics from floodlight.
Merge pull request #926 from isartcanyameres/fix/duplicated-monitoring-capability

Change openflowswitch monitoring capability type to ofmonitoring.
PathFinder takes into account congestion detected by NCLMonitoring.
Thread save and better logging for NCLProvisionerCapability
Select different circuits to reroute over time.
Fix replace method: deallocate before allocate.

When same ids are given it was not behaving correctly. It was deleting newly created circuits.
Config files for demo
Try to reallocate only reallocable circuits.
PathFinder takes into account congestion detected by NCLMonitoring.
Thread save and better logging for NCLProvisionerCapability

Conflicts:

	extensions/bundles/genericnetwork/src/main/java/org/opennaas/extensions/genericnetwork/capability/nclprovisioner/NCLProvisionerCapability.java

Conflicts solved manually.
Improve logging for NCLMonitoring not finding netstatistics.
Fix replace method: deallocate before allocate.

When same ids are given it was not behaving correctly. It was deleting newly created circuits.
Try to reallocate only reallocable circuits.

Conflicts:

	extensions/bundles/genericnetwork/src/main/java/org/opennaas/extensions/genericnetwork/capability/nclprovisioner/NCLProvisionerCapability.java
Conflicts solved manually.
Merge pull request #928 from isartcanyameres/fix/nclpathfinder-avoids-congested-routes

PathFinder takes into account congestion detected by NCLMonitoring.