Quantum/FWaaS/FWaaS-DVR

FWaaS DVR Migration

centralized to distributed there will be a check inside plugin to throw an exception if a firewall has been configured this requires helper to know if there is a firewall configured

Mix of centralized and distributed routers and migrating to a different types, although this might work the behavior is not yet known and our initial target is tackle the limited transitions from centralized to distributed

distributed to centralized there needs to a check inside plugin to throw an exception if a firewall has been configured this requires helper to know if there is a firewall configured, although this case is not the likely one to be addressed.