Use NuGetAuthenticate and a commandline task to restore packages

[merlevedeb]

Use NuGetAuthenticate and a commandline task to restore packages. This fixes issues with PackageSourceMapping, where the DotNetCoreCLI@2 task requires feed- prefixes in the source mapping configuration

See
https://learn.microsoft.com/en-us/nuget/consume-packages/package-source-mapping

There is a limitation when using the DotNetCoreCLI@2 Azure Pipelines task which can be worked around by using feed- prefixes in your source mapping configuration. It is recommended however to use NuGetAuthenticate for your authentication needs and call the dotnet cli directly from a script task. See microsoft/azure-pipelines-tasks#15542.

[merlevedeb]

Pause for now and add an additional prefix 'feed-' as a workaround.

• We've seen issues with NugetAuthenticate in the past as well
• Consider how the dotnet 9 nuget restore rewrite would solve this issue:
  https://devblogs.microsoft.com/dotnet/rewriting-nuget-restore-in-dotnet-9/