.Values.config.BinderHub.use_registry defaults to true

`BinderHub.use_registry` defaults to True so if `.Values.config.BinderHub.use_registry` is not set it should be true not false

Author: manics

helm-chart/binderhub/values.yaml

@@ -40,7 +40,9 @@ service:
   loadBalancerIP:
 
 config:
-  BinderHub: {}
+  BinderHub:
+    # This must equal the default value of c.BinderHub.use_registry
+    use_registry: true
   KubernetesBuildExecutor: {}
 
 extraConfig: {}