[openstreetmap/openstreetmap-website] Update embed.js.erb to use CDN test URLs (#2714)

[Grant]

I mentioned to @iandees: If it uses more traffic than expected or has any negative effects it would likely be best to revert the change. With that in mind, might be best to do a squish merge.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/openstreetmap-website/pull/2714#issuecomment-660652996
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/rails-dev/attachments/20200719/f6bc8b8a/attachment.htm>