Following smortex's suggestions

Author: TamesNU

manifests/mod/security.pp

@@ -34,7 +34,7 @@
 #   Defines the type of audit logging mechanism to be used.
 #
 # @param audit_log_format
-#   Defines what format the logs should be written in. Accepts `Native` and `JSON`.
+#   Defines what format the logs should be written in.
 # 
 # @param audit_log_storage_dir
 #   Defines the directory where concurrent audit log entries are to be stored. This directive is only needed when concurrent audit logging is used.
@@ -146,7 +146,7 @@
   String $audit_log_relevant_status                            = '^(?:5|4(?!04))',
   String $audit_log_parts                                      = $apache::params::modsec_audit_log_parts,
   String $audit_log_type                                       = $apache::params::modsec_audit_log_type,
-  Enum['Native', 'JSON'] $audit_log_format                     = $apache::params::modsec_audit_log_format,
+  Enum['Native', 'JSON'] $audit_log_format                     = 'Native',
   Optional[Stdlib::Absolutepath] $audit_log_storage_dir        = undef,
   Integer $secpcrematchlimit                                   = $apache::params::secpcrematchlimit,
   Integer $secpcrematchlimitrecursion                          = $apache::params::secpcrematchlimitrecursion,

manifests/params.pp

@@ -36,7 +36,6 @@
 
   $modsec_audit_log_parts = 'ABIJDEFHZ'
   $modsec_audit_log_type = 'Serial'
-  $modsec_audit_log_format = 'Native'
   $modsec_custom_rules = false
   $modsec_custom_rules_set = undef