Simplify fail2ban.ng.config
Simplify fail2ban.ng.config

Instead of doing the if defined/else/endif dance, just use .get()
Similarly, use get with an empty dict as a default for the for
loops. No need to break for users who do not use custom filters or
actions.

saltstack-formulas/fail2ban-formula,saltstack-formulas/fail2ban-formula,ibrsp/fail2ban-formula,irtnog/fail2ban-formula,saltstack-formulas/fail2ban-formula