Nullsafe topology use in NCLMonitor.
OFNetwork removed from OpenNaas.
Merge pull request #864 from isartcanyameres/fix/nullsafe-topology-use-in-nclmonitor

Nullsafe topology use in NCLMonitor.
Merge pull request #863 from adrian-rosello/fix/itests-for-ncl

Fix/itests for ncl
Merge branch 'ofertie/refactor' of https://github.com/dana-i2cat/opennaas into fix/itests-for-ncl