bundles/letsencrypt: add metadata to reload certificates and services

bundles/nginx/metadata.py

@@ -31,9 +31,13 @@ def letsencrypt(metadata):
     if not node.has_bundle('letsencrypt'):
         return metadata, DONE
 
-    le = metadata.setdefault('letsencrypt', {}).setdefault('domains', {})
+    le = metadata.setdefault('letsencrypt', {})
+    domains = le.setdefault('domains', {})
 
     for domain in metadata.get('nginx', {}).get('vhosts', {}).keys():
-        le[domain] = set()
+        domains[domain] = set()
+
+    reload = le.setdefault('reload_after', set())
+    reload.add('nginx')
 
     return metadata, RUN_ME_AGAIN