vrrp::instance: track_process: Switch default undef->[]

Author: bastelfreak

REFERENCE.md

@@ -1203,11 +1203,11 @@ Default value: `undef`
 
 ##### <a name="-keepalived--vrrp--instance--track_process"></a>`track_process`
 
-Data type: `Optional[Array[String[1]]]`
+Data type: `Array[String[1]]`
 
 Define which process trackers to run.
 
-Default value: `undef`
+Default value: `[]`
 
 ##### <a name="-keepalived--vrrp--instance--track_file"></a>`track_file`
 

manifests/vrrp/instance.pp

@@ -206,7 +206,7 @@
   $auth_type                                                              = undef,
   Optional[Variant[String, Sensitive[String]]] $auth_pass                 = undef,
   $track_script                                                           = undef,
-  Optional[Array[String[1]]] $track_process                               = undef,
+  Array[String[1]] $track_process                                         = [],
   Array[String[1]] $track_file                                            = [],
   Array[String[1]] $vrrp_track_file                                       = [],
   $track_interface                                                        = undef,

templates/vrrp_instance.erb

@@ -105,10 +105,10 @@ vrrp_instance <%= @_name %> {
   <%- end -%>
   }
   <%- end -%>
-  <%- if @track_process -%>
+  <%- unless @track_process.empty? -%>
 
   track_process {
-  <%- Array(@track_process).each do |track| -%>
+  <%- @track_process.each do |track| -%>
     <%= track %>
   <%- end -%>
   }