These do not really belong in the Linux.Host project. The ps1xml files and some modules belong to System.Management.Automation, and some other modules belong to their respective module projects.

The current state of affairs is unfortunate for the FullCLR PowerShell builds, as its top project is not Linux.Host, which has the required content. Some of the content dependencies are shared, but we cannot move them to their correct homes until dotnet/cli#753 is resolved.