Set parameter optional so undef is working

Author: SimonHoenscheid

manifests/server.pp

@@ -181,7 +181,7 @@
   Boolean                                            $manage_logdir                = $postgresql::params::manage_logdir,
   Boolean                                            $manage_xlogdir               = $postgresql::params::manage_xlogdir,
   Postgresql::Pg_password_encryption                 $password_encryption          = $postgresql::params::password_encryption,
-  Postgresql::Pg_password_encryption                 $pg_hba_auth_password_encryption = undef,
+  Optional[Postgresql::Pg_password_encryption]       $pg_hba_auth_password_encryption = undef,
   Optional[String]                                   $extra_systemd_config         = $postgresql::params::extra_systemd_config,
 
   Hash[String, Hash]                                 $roles                        = {},

manifests/server/instance/config.pp

@@ -74,7 +74,7 @@
   Optional[String[1]]                            $log_line_prefix              = $postgresql::server::log_line_prefix,
   Optional[String[1]]                            $timezone                     = $postgresql::server::timezone,
   Postgresql::Pg_password_encryption             $password_encryption          = $postgresql::server::password_encryption,
-  Postgresql::Pg_password_encryption             $pg_hba_auth_password_encryption = $postgresql::server::pg_hba_auth_password_encryption,
+  Optional[Postgresql::Pg_password_encryption]   $pg_hba_auth_password_encryption = $postgresql::server::pg_hba_auth_password_encryption,
   Optional[String]                               $extra_systemd_config         = $postgresql::server::extra_systemd_config,
 ) {
   if $pg_hba_auth_password_encryption {