change password_encryption method selection to selector statement

Co-authored-by: Tim Meusel <tim@bastelfreak.de>

Author: SimonHoenscheid

manifests/params.pp

@@ -25,7 +25,7 @@
   $manage_selinux               = pick($manage_selinux, false)
   $package_ensure               = 'present'
   $module_workdir               = pick($module_workdir,'/tmp')
-  $password_encryption          = if versioncmp($version, '14') >= 0 { 'scram-sha-256' } else { 'md5' }
+  $password_encryption          = versioncmp($version, '14') ? { -1 => 'md5', default => 'scram-sha-256' }
   $extra_systemd_config         = undef
   $manage_datadir               = true
   $manage_logdir                = true

spec/acceptance/overridden_settings_spec.rb

@@ -26,7 +26,7 @@ class { 'postgresql::server':
           type        => 'host',
           database    => 'mydb',
           user        => 'myuser',
-          auth_method => 'md5',
+          auth_method => $postgresql::server::password_encryption,
           address     => '192.0.2.100/32',
         },
       },