Add postfix::mailalias, that creates an email alias and updates the binary...

Add postfix::mailalias, that creates an email alias and updates the binary version of the local alias database. (#233)

Supersedes #115.

manifests/files.pp

@@ -101,9 +101,8 @@ class postfix::files {
   }
 
   if $manage_root_alias {
-    mailalias {'root':
+    postfix::mailalias {'root':
       recipient => $root_mail_recipient,
-      notify    => Exec['newaliases'],
     }
   }
 

manifests/mailalias.pp

+# == Definition: postfix::mailalias
+#
+# Creates an email alias in the local alias database and updates the binary
+# version of said database.
+#
+# === Parameters
+#
+# [*name*]      - the alias name. See aliases(5).
+# [*ensure*]    - present/absent, defaults to present.
+# [*recipient*] - where email should be sent.
+#
+# === Requires
+#
+# - Class["postfix"]
+#
+# === Examples
+#
+#   node "toto.example.com" {
+#
+#     include postfix
+#
+#     postfix::mailalias { 'postmaster':
+#       ensure    => present,
+#       recipient => 'foo',
+#     }
+#
+define postfix::mailalias (
+  Variant[String, Array[String]] $recipient,
+  Enum['present', 'absent']      $ensure='present',
+) {
+  mailalias { $title:
+    ensure    => $ensure,
+    name      => $name,
+    recipient => $recipient,
+    notify    => Exec['newaliases'],
+  }
+}