deviceDB initialized by ResourceDirectory
deviceDB initialized by ResourceDirectory
RD3interactor integrated

on deviceDB constructor all resources of RD are loaded.
integration of SmartSantanderEventBrokerClient
 in order to update deviceDB on add_sensor_node, remove_sensor_node events.
Added Key Value configuration pairs from RD , Events to DeviceConfig creation
minor edit
changes about adding a node etc.
Added packages to framework-extender-gateway
Merge branch 'develop' into feature/devicedb-smartsantander-rd

Conflicts:
	device-db/pom.xml
Updates according to changes in the SmartSantanderEventBrokerClient (previously SmartSantanderClient)
Closes #258 (DeviceDB implementation for SmartSantander Resource Directory (RD))
Merge branch 'feature/devicedb-smartsantander-rd' into develop
Closes #288 (Implement SmartSantander EventBroker integration)
Closes #275 (Attach Testbed Runtime gateways to SmartSantander EventBroker to listen device attached/detached Events)
Bugfixes for #258 (DeviceDB implementation for SmartSantander Resource Directory (RD))
Working on #306 (Integrate OSGi plugin mechanism on gateway)
Working on #306 (Integrate OSGi plugin mechanism on gateway)
Fixed broken unit test SmartSantanderEventBrokerObserverTest
Working on #306 (Integrate OSGi plugin mechanism on gateway)