make path configurable for config_entry

manifests/server/config_entry.pp

@@ -9,15 +9,8 @@
   Enum['present', 'absent']                               $ensure = 'present',
   String[1]                                               $key    = $name,
   Optional[Variant[String[1], Numeric, Array[String[1]]]] $value  = undef,
-  Variant[Boolean, String[1]]                             $path   = false
+  Variant[String[1], Stdlib::Absolutepath]                $path   = $postgresql::server::postgresql_conf_path
 ) {
-  $postgresql_conf_path = $postgresql::server::postgresql_conf_path
-
-  $target = $path ? {
-    false   => $postgresql_conf_path,
-    default => $path,
-  }
-
   # Those are the variables that are marked as "(change requires restart)"
   # on postgresql.conf.  Items are ordered as on postgresql.conf.
   #