Comment 2 for bug 1647436

Thanks, Jeffrey, that makes sense! However, it's not what the Multinode Deployment of Kolla guide says -- it says "A local registry is required for a multinode Kolla deployment".

I think the Multinode doc needs to say one of two things:

1) Local registry is required, but you configure it to proxy Docker Hub

2) Local registry is not required -- use it if you want to build your own images; otherwise configure docker.io in globals.yml

I'm happy to help with the doc update (or updating the start-registry script if appropriate), if you can help me understand the desired behavior.