Notifications, Upstreams, and Retention in VSTS Package Management

[@anastasiasmith5393]

I'd like to be able to pass in the credentials at build time on a build server (not VSTS Build). Is there a way to do this without having to manually log in to the build server and configure the CredentialProvider, or by committing the credentials in the nuget.config file to source control? ~ Anastasia Smith from tfs-alerts. com