The nsx-v FWaaS driver will add the configured firewall rules to
the router edges.
Currently there is not support for shared routers.
The rules will be edded after the current rules (NAT, LBaaS, external traffic)
for exclusive routers edges and distributed routers PLR edged.
Change-Id: I82ba90070ef4e739a0b5c4463ef03a807e26adfb
f10dcfe82d