c5a5b6b3f7
iptables-services might not be installed and is required if we're expecting to be able to start a service called "iptables". Installing that package is what provides the 'iptables' systemd unit file. Change-Id: Ic4ccbc3a0fb531d3d3b7924d22ed0b993a689622
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.