Add script to validate iptables assumptions.
Add script to validate iptables assumptions.

nbartos/calico,TrimBiggs/calico,beddari/calico,alexhersh/calico,anortef/calico,nbartos/calico,anortef/calico,neiljerram/felix,matthewdupre/felix,ocadotechnology/calico,TrimBiggs/calico,kasisnu/calico,neiljerram/felix,alexhersh/calico,neiljerram/felix,Metaswitch/calico,kasisnu/calico,neiljerram/felix,Metaswitch/calico,matthewdupre/felix,beddari/calico,ocadotechnology/calico