Fixed code coverage compatibility issue

[cvpoienaru]

Description

Fixed code coverage compatibility issue

[jakubch1]

lets have method AddDefaultExclusions

with content:
var processor = new CodeCoverageRunSettingsProcessor(defaultConfigurationElement);
configurationElement = (XmlElement)processor.Process(configurationElement);

Could you please add comment to this function with explanation why we are adding it.

I want to make sure that nobody will remove it :)

[ghost]

Hello @cvpoienaru!

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[robertleelarson]

I believe this regression has shown up again with the push of either this PR Or the one Prior (16.7.0)
#2287

We create a win 64 build of our dotnet core 3.1 project.
We were using 16.6.1 after the reported issues of not fixed through 16.5.0

Azure Dev Ops agents are reporting 16.7.0 is installed.

Test run for D:\a\1\s\PROJECTFOLDER\bin\Release\netcoreapp3.1\win-x64\PROJECT.Api.Tests.dll(.NETCoreApp,Version=v3.1) Microsoft (R) Test Execution Command Line Tool Version 16.7.0

Reverting back to 16.2.0 via nuget is allowing the tests to be run again while 16.7.0 is identifying itself as the CLI tool.

Behavior started today 8/26/2020 using ADO requested image of windows-latest.
Last week the CLI Tool was 16.6.0 with no issues.

"C:\Program Files\dotnet\dotnet.exe" test D:\a\1\s\PROJECT\PROJECTcsproj --configuration Release --logger trx --no-build --no-restore --runtime win-x64 "--collect:XPlat Code Coverage" --results-directory:D:\a\1\s\DotNetTestResults --settings:D:\a\1\s\DevOps\Pipelines\custom_files\PROJECTDotNet.runsettings

Run Settings contents File:
<?xml version="1.0" encoding="utf-8"?> <RunSettings> <RunConfiguration> <MaxCpuCount>0</MaxCpuCount> </RunConfiguration> </RunSettings>

Error coming in using 16.6.1, 16.7.0, and 16.7.1 Nuget packages with the ADO 16.7.0 Test Command line tool
`
Starting test execution, please wait...

A total of 1 test files matched the specified pattern.
Testhost process exited with error: It was not possible to find any compatible framework version
The specified framework 'Microsoft.AspNetCore.App', version '3.1.0' was not found.

• Check application dependencies and target a framework version installed at:
  D:\a\1\s\PROJECT.Api.Tests\bin\Release\netcoreapp3.1\win-x64\
• Installing .NET Core prerequisites might help resolve this problem:
  https://go.microsoft.com/fwlink/?LinkID=798306&clcid=0x409
• The .NET Core framework and SDK can be installed from:
  https://aka.ms/dotnet-download
  . Please check the diagnostic logs for more information.
  Results File: D:\a\1\s\DotNetTestResults\VssAdministrator_fv-az686_2020-08-26_19_40_57.trx`

[nohwnd]

@cvpoienaru please have a look.