Add name parameter to Azure Pipelines task for clarity in output variable

Author: johlju

.build/README.md

@@ -56,6 +56,7 @@ a boolean value that the pipeline captures, e.g.:
     $shouldRun = ./.build/Test-ShouldRunDscResourceIntegrationTests.ps1 -BaseBranch $targetBranch -CurrentBranch HEAD
     Write-Host "##vso[task.setvariable variable=ShouldRunDscResourceIntegrationTests;isOutput=true]$shouldRun"
   displayName: 'Determine if DSC resource tests should run'
+  name: determineShouldRun
 ```
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