debug mode is false for PowerShell handler

TryGetValue for debugNode

Merge branch 'users/DenisRumyantsev/add-handlers-into-containerHandle…

…rInvoker' into releases/2.203.900

Update release notes

dotnet-install.sh updated (microsoft#3786)

Add dotnet 2.1 installation before signing (microsoft#3766)

* Add dotnet 2.1 installation before signing

* Fix mapping

* Fix version

Update powershell version of dotmet install script (microsoft#3746)

Update error message on PR changes microsoft#3738 (microsoft#3741)

* Change error message

Changed image for stage Windows (x86) to windows-2019 (microsoft#3734)

release 2.198.2