postfix.init.pp: Make sure the necessary directories for the bind mount are created.

postfix/manifests/init.pp

@@ -122,6 +122,18 @@ class postfix {
 
     if $submission {
         include sasl::saslauthd
+        file { "/var/spool/postfix/var":
+            ensure => directory,
+            mode => "0755",
+            owner => "root",
+            group => "root",
+        }
+        file { "/var/spool/postfix/var/run":
+            ensure => directory,
+            mode => "0755",
+            owner => "root",
+            group => "root",
+        }
         mount { "/var/spool/postfix/var/run/saslauthd":
             name => "/var/run/saslauthd",
             ensure  => mounted,