keepalived::vrrp::track_process: use title for naming fragement

we should not use proc_name as the title for the concat fragment
since this could be an array now.

manifests/vrrp/track_process.pp

@@ -30,7 +30,7 @@
   Boolean $full_command          = false,
   Optional[Enum['initial','partial']] $param_match = undef
 ) {
-  concat::fragment { "keepalived.conf_vrrp_track_process_${proc_name}":
+  concat::fragment { "keepalived.conf_vrrp_track_process_${name}":
     target  => "${keepalived::config_dir}/keepalived.conf",
     content => epp('keepalived/vrrp_track_process.epp', {
         'name'            => $name,