Would it be possible to have the "reindex.remote.whitelist" setting modifiable via the HTTP API instead of having to specify it in the elasticsearch.yml config? I realize this setting currently most likely requires a cluster restart, although it would be great if this could simply be implemented as a settings lookup each time the "/_reindex" endpoint is called. If you agree and this is a reasonable request, I'd gladly create an issue in the github project to have the included in a future version.
Thank you