Mac: Add rid to tar.gz artifacts (#383)

Author: edvilme

.vsts-ci.yml

@@ -159,7 +159,7 @@ extends:
                 includeRootFolder: false
                 archiveType: 'tar'
                 tarCompression: 'gz'
-                archiveFile: '$(Build.ArtifactStagingDirectory)/artifacts/dotnet-core-uninstall.tar.gz'
+                archiveFile: '$(Build.ArtifactStagingDirectory)/artifacts/dotnet-core-uninstall-$(_RID).tar.gz'
                 replaceExistingArchive: true
             - task: 1ES.PublishBuildArtifacts@1
               condition: eq(variables['system.pullrequest.isfork'], false)