Upload the bootstrapped repo only in build job

Author: aminya

script/vsts/platforms/templates/bootstrap.yml

@@ -31,6 +31,6 @@ steps:
     parameters:
       artifacts:
         - path: '.'
-          condition: succeeded()
+          condition: and(succeeded(), eq(variables.IsBuild, 'true'))
           archiveFileName: bootstrapped_repository_$(AGENT_OS)_$(buildArch).7z
           archiveDir: $(Build.ArtifactStagingDirectory)