Automatic migration of NuGet.config credentials doesn't work

[caveman-dick]

Description

Automatic migration of NuGet.config credentials doesn't work. I've tried with credentials stored in the Nuget.config file both encrypted and in plaintext.

Repro steps

1. Have an authenticated source setup in your nuget.config e.g. Artifactory
2. Run paket.exe convert-from-nuget

Expected behavior

The current credentials in the NuGet.config are migrated to the paket.dependencies file.

Actual behavior

No credentials are added and when the paket install is run authentication fails.

Known workarounds

Run the conversion and then manually update the paket.dependencies file adding the credentials