[firehol/f21] (3 commits) ...Add iptables to BR for check

[Christopher Meng]

Summary of changes:

  51097a8... Update to 2.0.0 (*)
  17b1e93... Add systemd units. (*)
  a618b95... Add iptables to BR for check (*)

(*) This commit already existed in another branch; no separate mail sent