FWaaS for DVR routers were only supported for
North-South traffic. But with the recent change
in the DVR router-info to handle FloatingIP's
as mentioned in the reference patch[1], the
dist_fip_count variable was removed and was
replaced by rtr_fip_connect.
So change in variable 'rtr_fip_connect' was
not fixed in FWaaS.
This patch fixes it in the FWaaS to apply
the Firewall rule in the router namespace
for the North-South traffic.
[1] https://review.openstack.org/#/c/283757
Closes-Bug: #1715395
Change-Id: Id8c902381f95e39bc13e3b3aeeeaa799c72f0dca
5706252c79