Provide basic authentication when using download_url_override?

[nielsbuus]

Not sure if this is a feature request or me unable to spot the correct approach, but it seems like the option to use a custom url for the installer assumes that the webserver does not require authentication. For my environments, the webserver will be a Nexus and each repository will require authentication.

So my question is - is there support for either providing basic authentication or alternatively downloading the installer before and somehow instructing chef_client_updater to not download the installer, but instead use a local path to my already downloaded installer?