chore: set secretid for puppetboard

- manage the secret_key for puppetboard
- required since module upgrade

site/profiles/manifests/puppet/puppetboard.pp

@@ -21,7 +21,7 @@ class profiles::puppet::puppetboard (
   Stdlib::Port $nginx_port      = 80,
   Stdlib::Host $nginx_vhost     = 'puppetboard.main.unkin.net',
   Array[Stdlib::Host]  $nginx_aliases = [],
-  #String[1] $secret_key         = "${fqdn_rand_string(32)}",
+  String[1] $secret_key         = "${fqdn_rand_string(32)}",
 ) {
 
   # store puppet-agents ssl settings/certname
@@ -37,7 +37,7 @@ class profiles::puppet::puppetboard (
     basedir             => $basedir,
     virtualenv_dir      => $virtualenv_dir,
     settings_file       => $settings_file,
-    #secret_key         => $secret_key,
+    secret_key          => $secret_key,
     default_environment => $default_environment,
     puppetdb_host       => $puppetdb_host,
     puppetdb_port       => 8081,