feat: add configurable ufw_incoming_traffic

[jdaln]

Hello @konstruktoid !

I would like to add this ufw_incoming_traffic variable allows users to specify which incoming ports should be opened in UFW.

I have tried to add a few tests but I was not able to get the testing environment setup on my machine. May I request you to test this please? I am quite time-constraint lately and won't have time to debug the installation.

[konstruktoid]

Thanks for the PR, but I believe that additional ports should be configured in the service roles, eg add port 80/443 openings in your webserver role.

Regarding ssh it's configured at https://github.com/konstruktoid/ansible-role-hardening/blob/master/tasks/ufw.yml#L121-L128 and mentioned in the readme at https://github.com/konstruktoid/ansible-role-hardening/blob/master/README.md?plain=1#L116-L118

[jdaln]

Alright, then this is outside the scope of this playbook. Also, true that ssh was already configured, my bad.

Closing the PR.