Add powerdns caching nameserver to main play in skeleton
Add yaml marker, typo corrections
Split theansibles security role into individual packages for fail2ban, lynis and rkhunter
Remove outdated fail2ban conf files, altering main conf files is not recommened anyway
Add a jinja-fied fail2ban jail.local template and defaults
Remove redundent code
Add more jinja-fied template defaults for fail2ban