Insert the pre-release nuget feed before building test artifacts (#18507)

build.psm1

@@ -1140,7 +1140,16 @@ function Publish-PSTestTools {
                 $runtime = $Options.Runtime
             }
 
-            dotnet publish --output bin --configuration $Options.Configuration --framework $Options.Framework --runtime $runtime --self-contained
+            Write-Verbose -Verbose -Message "Starting dotnet publish for $toolPath with runtime $runtime"
+
+            dotnet publish --output bin --configuration $Options.Configuration --framework $Options.Framework --runtime $runtime --self-contained | Out-String | Write-Verbose -Verbose
+
+            $dll = $null
+            $dll = Get-ChildItem -Path bin -Recurse -Filter "*.dll"
+
+            if (-not $dll) {
+                throw "Failed to find exe in $toolPath"
+            }
 
             if ( -not $env:PATH.Contains($toolPath) ) {
                 $env:PATH = $toolPath+$TestModulePathSeparator+$($env:PATH)

tools/releaseBuild/azureDevOps/templates/testartifacts.yml

@@ -14,6 +14,10 @@ jobs:
   - checkout: self
     clean: true
 
+  - template: /tools/releaseBuild/azureDevOps/templates/insert-nuget-config-azfeed.yml
+    parameters:
+      repoRoot: $(Build.SourcesDirectory)
+
   - pwsh: |
       Import-Module ./build.psm1
       Start-PSBootstrap
@@ -59,5 +63,6 @@ jobs:
       BuildTestPackage -runtime linux-musl-x64
 
     displayName: Build test package and upload
+    retryCountOnTaskFailure: 1
 
   - template: /tools/releaseBuild/azureDevOps/templates/step/finalize.yml