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Task name

DotNetCoreCLI

Task version

2.271

Issue Description

With the newer Version 2.271 of the DotNetTask the flag "--solution" is missing, which cannot be specified explicity by myself. As seen in the source code the flag will be set by determining the type of the project by the fileextension: A file ending with "slnx" should automatically add the flag, which does not happen.

With 2.269 everything worked fine (until yesterday). Same pipeline without any changes on our side, but with newer Version 2.271 we got the problem.

Starting: run unit tests
==============================================================================
Task         : .NET Core
Description  : Build, test, package, or publish a dotnet application, or run a custom dotnet command
Version      : 2.269.0
Author       : Microsoft Corporation
Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/build/dotnet-core-cli
==============================================================================
Info: .NET Core SDK/runtime 2.2 and 3.0 are now End of Life(EOL) and have been removed from all hosted agents. If you're using these SDK/runtimes on hosted agents, kindly upgrade to newer versions which are not EOL, or else use UseDotNet task to install the required version.
/opt/hostedtoolcache/dotnet/dotnet test --solution /mnt/vss/_work/1/repository/./NameOfSolution.slnx

and now with Version 2.271 the flag "--solution" is missing

Environment type (Please select at least one enviroment where you face this issue)

• Self-Hosted
• Microsoft Hosted
• VMSS Pool
• Container

Azure DevOps Server type

dev.azure.com (formerly visualstudio.com)

Azure DevOps Server Version (if applicable)

No response

Operation system

Ubuntu

Relevant log output

Starting: run unit tests
==============================================================================
Task         : .NET Core
Description  : Build, test, package, or publish a dotnet application, or run a custom dotnet command
Version      : 2.271.0
Author       : Microsoft Corporation
Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/build/dotnet-core-cli
==============================================================================
Info: .NET Core SDK/runtime 2.2 and 3.0 are now End of Life(EOL) and have been removed from all hosted agents. If you're using these SDK/runtimes on hosted agents, kindly upgrade to newer versions which are not EOL, or else use UseDotNet task to install the required version.
/opt/hostedtoolcache/dotnet/dotnet test /mnt/vss/_work/1/repository/./NameOfSolution.slnx
Specifying a solution for 'dotnet test' should be via '--solution'.

Full task logs with system.debug enabled

 [REPLACE THIS WITH YOUR INFORMATION] 

Repro steps