Installing a package from PackageManager console with setting "All" tries only first source

[skofman1]

Repro steps:

1. Set myget as top source (for example), and Nuget as second source
2. Open Package MAnager Console
3. Try to install package: Install-Package Microsoft.ApplicationInsights.Web -Pre

Install will fail since only download from myget is attempted:
GET https://myget-2e16.kxcdn.com/artifacts/nugetbuild/nuget/v3/flatcontainer/microsoft.diagnostics.tracing.eventsource.redist/1.1.28/microsoft.diagnostics.tracing.eventsource.redist.1.1.28.nupkg
  NotFound https://myget-2e16.kxcdn.com/artifacts/nugetbuild/nuget/v3/flatcontainer/microsoft.diagnostics.tracing.eventsource.redist/1.1.28/microsoft.diagnostics.tracing.eventsource.redist.1.1.28.nupkg 605ms
Install failed. Rolling back...
Uninstalling NuGet package Microsoft.Diagnostics.Tracing.EventSource.Redist.1.1.28.
Install-Package : Package 'Microsoft.Diagnostics.Tracing.EventSource.Redist.1.1.28' is not found on source 'https://www.myget.org/F/nugetbuild/api/v3/index.json'.
At line:1 char:1
+ Install-Package Microsoft.Diagnostics.Tracing.EventSource.Redist
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Install-Package], Exception
    + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PackageManagement.PowerShellCmdlets.InstallPackageCommand

[alpaix]

The behavior is similar to #2322. But this time it manifests itself in Powershell cmdlet.

[joelverhagen]

Fixed with NuGet/NuGet.Client#549