Make iptables setup optional

[federico-razzoli]

Setting up Iptables is good (I asked you to do it) but some people prefer to leave all ports open.

I recommend to add a setup_iptables variables, which is true by default, and don't include iptables.yml if it's false.

[mike-aboagye]

Okay. I will do so. Thanks.

[mike-aboagye]

fixed.

[federico-razzoli]

I reopen this issue because it's not optional. It even has the always tag.

[mike-aboagye]

fixed

[mike-aboagye]

I used the 'iptables' tag instead of the 'always' tag so users can apply the skip-tag option to the tag 'iptables' if they want to leave all ports open.

[federico-razzoli]

This means that one always has to remember to specify that tag. It's not something I'd like to gave on a system I manage.
One should be able to set a variable once, and then forget it.