v6.1.5 - 2019-07-16

* Breaking changes

- Disable `Enter-PSHostProcess` cmdlet when system in lock down mode (Internal 8968)

* Build and Packaging Improvements

- Update DotNet SDK and runtime framework version (Internal 9087)
- Add automated RPM signing to release build (#10013)
- Update copyright symbol for NuGet packages (#9936)
- Bump `System.Net.Http.WinHttpHandler` from `4.5.3` to `4.5.4` (#9790)
- Integrate building NuGet package in the coordinated build (#8947) (#9708)
- Bump `Newtonsoft.Json` (#9662)