Oh, time flies. For the record, I had installed lighttpd from testing some time ago and thought to submit karma after it had been running for a few days on my server. Well, it worked fine but I forgot to submit the karma before the 14 days was reached. Thanks in any case!
Once three logged in users have given positive karma, the update can be pushed to stable. As of now, the karma counter is at 1. Karma from anonymous users does not count for this purpose. So a little bit more testing and this can be pushed to stable.
It does not seem to be mentioned in the JSON files in https://infrastructure.fedoraproject.org/repo/json/
Perhaps that's only in the upcoming RHEL 7.6? If not, what's the exact RHEL channel name?