bundles: add some telegraf plugins

bundles/powerdns/metadata.py

@@ -37,6 +37,15 @@ defaults = {
     },
 }
 
+if node.has_bundle('telegraf'):
+    defaults['telegraf'] = {
+        'input_plugins': {
+            'builtin': {
+                'powerdns': [{}],
+            },
+        },
+    }
+
 
 @metadata_reactor.provides(
     'icinga2_api/powerdns/services',