update bw to 4.3, add .provides() to metadata reactors

bundles/gitea/metadata.py

@@ -45,7 +45,9 @@ defaults = {
 }
 
 
-@metadata_reactor
+@metadata_reactor.provides(
+    'nginx/vhosts',
+)
 def nginx(metadata):
     if not node.has_bundle('nginx'):
         raise DoNotRunAgain
@@ -67,7 +69,9 @@ def nginx(metadata):
     }
 
 
-@metadata_reactor
+@metadata_reactor.provides(
+    'icinga2_api/gitea/services',
+)
 def icinga_check_for_new_release(metadata):
     return {
         'icinga2_api': {