bundles/nginx: use DEFAULTS for letsencrypt

bundles/nginx/metadata.py

@@ -31,13 +31,16 @@ def letsencrypt(metadata):
     if not node.has_bundle('letsencrypt'):
         return metadata, DONE
 
-    le = metadata.setdefault('letsencrypt', {})
-    domains = le.setdefault('domains', {})
+    domains = {}
 
     for domain in metadata.get('nginx', {}).get('vhosts', {}).keys():
         domains[domain] = set()
 
-    reload = le.setdefault('reload_after', set())
-    reload.add('nginx')
-
-    return metadata, RUN_ME_AGAIN
+    return {
+        'letsencrypt': {
+            'domains': domains,
+            'reload_after': {
+                'nginx',
+            },
+        },
+    }, DEFAULTS, RUN_ME_AGAIN