In https://gerrit.wikimedia.org/r/#/c/346794/9/modules/shiny_server/manifests/server.pp we have it setup to download & install Shiny Server (https://download3.rstudio.org/ubuntu-12.04/x86_64/shiny-server-1.5.3.838-amd64.deb from https://www.rstudio.com/products/shiny/download-server/)
Before we can add our shiny server stuff to Ops' puppet repo, that package needs to be uploaded to WMF's apt repository so that we wouldn't need to hardcode the wget download into the module.