Renew a cert with webroot plugin which was generated with standalone plugin

@schoen, how can we do this using the certbot commands? I’ve installed a couple of sites using the --standalone method as well as 1 that I had to install using the --manual method because the site hadn’t launched yet and was hosted on a different server.

Trying to get these setup using --webroot so the webserver does not have to be stopped for renewals.

thanks!