add: get raw inventory from opendaylight controller
change: add openflow_id to devices with a hack, need to recreate database ...
add: additional function to reinitialize the network in opendaylight
add: online field to device
change: save/update controller inventory in opendaylight database
change: activate device parameter validation again
add: reset all flow_tables and flows of a OpenDaylight and delete the active flows in the network
change: fix max_tables field in device from opendaylight inventory
new: first step of flow direction flow table during reinitialization of opendaylight