Opencover and Code coverage improvements (#4550)

Author: adityapatwardhan

test/tools/CodeCoverageAutomation/Start-CodeCoverageRun.ps1

@@ -143,6 +143,12 @@ $jsonFile = "$outputBaseFolder\CC.json"
 
 try
 {
+    ## This is required so we do not keep on merging coverage reports.
+    if(Test-Path $outputLog)
+    {
+        Remove-Item $outputLog -Force -ErrorAction SilentlyContinue
+    }
+
     $oldErrorActionPreference = $ErrorActionPreference
     $ErrorActionPreference = 'Stop'
     Write-LogPassThru -Message "Starting downloads."
@@ -264,9 +270,5 @@ finally
 
     ## Disable the cleanup till we stabilize.
     #Remove-Item -recurse -force -path $outputBaseFolder
-
-    ## This is required so we do not keep on merging coverage reports.
-    Remove-Item $outputLog -Force -ErrorAction SilentlyContinue
-
     $ErrorActionPreference = $oldErrorActionPreference
 }

test/tools/OpenCover/OpenCover.psm1

@@ -555,7 +555,7 @@ function CreateOpenCoverCmdline($target, $outputLog, $targetArgs)
         "-hideskipped:all",
         "-mergeoutput",
         "-filter:`"+[*]* -[Microsoft.PowerShell.PSReadLine]*`"",
-        "-targetargs:`"-EncodedCommand $base64targetArgs`""
+        "-targetargs:`"-NoProfile -EncodedCommand $base64targetArgs`""
 
     $cmdlineAsString = $cmdline -join " "