Rewrite jail.local handling through source/content.

Add tests

manifests/params.pp

@@ -63,8 +63,8 @@ class fail2ban::params {
   # Define how you want to manage jails configuration:
   # "file" - To provide jails stanzas as a normal file
   # "concat" - To build them up using different fragments
-  #          - This option, set as default, permits the use of the fail2ban::jail define
-  $jails_config = 'concat'
+  #          - This option, preferred, permits the use of the fail2ban::jail define
+  $jails_config = ''
 
   $jails_file = $::operatingsystem ? {
     default => '/etc/fail2ban/jail.local',