CLOUDSTACK-10317: Fix SNAT rules for additional public nics (#2476)
CLOUDSTACK-10317: Fix SNAT rules for additional public nics (#2476)

* CLOUDSTACK-10317: Fix SNAT rules for additional public nics

This allows networks with additional public nics to have correct
SNAT iptables rules applied on configuration.

Signed-off-by: Rohit Yadav <902b9eb5dd62819678163bd5e00fbf0cbc7c264b@shapeblue.com>

* update based on Wei's suggested change

Signed-off-by: Rohit Yadav <902b9eb5dd62819678163bd5e00fbf0cbc7c264b@shapeblue.com>

DaanHoogland/cloudstack,GabrielBrascher/cloudstack,wido/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,GabrielBrascher/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,wido/cloudstack,jcshen007/cloudstack,jcshen007/cloudstack,jcshen007/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,wido/cloudstack,DaanHoogland/cloudstack,jcshen007/cloudstack,jcshen007/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,DaanHoogland/cloudstack