3c60b35a19
We continue to see the odd task rc of -13 when running iptables-save to store persistent set of firewall rules. Switch to shell to give us a bit more debugging freedom if necessary (and to rule out the command module). Change-Id: I0c0208101cad985d4113de6b636c3816613b778c
Saves current iptables rules for both ipv4 and ipv6 and makes them persistent so that they are available if iptables or the instance is restarted.
This role can be re-used more than once in order to persist new rules.