postfix: a couple of fixes required to make augeas stuff work.

manifests/augeas.pp

@@ -4,4 +4,9 @@ class postfix::augeas {
     lens_source => 'puppet:///modules/postfix/lenses/postfix_transport.aug',
     test_source => 'puppet:///modules/postfix/lenses/test_postfix_transport.aug',
   }
+  augeas::lens {'postfix_virtual':
+    ensure      => present,
+    lens_source => 'puppet:///modules/postfix/lenses/postfix_virtual.aug',
+    test_source => 'puppet:///modules/postfix/lenses/test_postfix_virtual.aug',
+  }
 }

manifests/transport.pp

@@ -68,8 +68,7 @@ define postfix::transport (
   }
 
   augeas {"Postfix transport - ${name}":
-    load_path => '/usr/share/augeas/lenses/contrib/',
-    lens      => 'Postfix_Transport.aug',
+    lens    => 'Postfix_Transport.lns',
     incl    => $file,
     changes => $changes,
     require => [Package['postfix'], Augeas::Lens['postfix_transport']],

manifests/virtual.pp

@@ -58,9 +58,8 @@ define postfix::virtual (
   }
 
   augeas {"Postfix virtual - ${name}":
-    load_path => '/usr/share/augeas/lenses/contrib/',
     incl    => $file,
-    lens      => 'Postfix_Virtual.aug',
+    lens    => 'Postfix_Virtual.lns',
     changes => $changes,
     require => [Package['postfix'], Augeas::Lens['postfix_transport']],
     notify  => Exec['generate /etc/postfix/virtual.db'],