Add support for notify-source and also-notify

Conflicts:
	templates/view.erb

manifests/view.pp

@@ -9,6 +9,8 @@ define bind::view (
     $recursion_match_clients      = 'any',
     $recursion_match_destinations = '',
     $recursion_match_only         = false,
+    $notify_source                = '',
+    $also_notify                  = [],
     $order                        = '10',
 ) {
     $confdir = $::bind::confdir

manifests/zone.pp

@@ -6,6 +6,7 @@ define bind::zone (
     $dynamic         = true,
     $masters         = '',
     $transfer_source = '',
+    $notify_source   = '',
     $allow_updates   = '',
     $update_policies = '',
     $allow_transfers = '',
@@ -48,6 +49,10 @@ define bind::zone (
         fail("transfer_source may only be provided for bind::zone resources with zone_type 'slave' or 'stub'")
     }
 
+    unless !($notify_source != '' and ! member(['master', 'slave'], $zone_type)) {
+        fail("notify_source may only be provided for bind::zone resources with zone_type 'master' or 'slave'")
+    }
+
     unless !($allow_updates != '' and ! $dynamic) {
         fail("allow_updates may only be provided for bind::zone resources with dynamic set to true")
     }