...

    if params.version and check_stack_feature(StackFeature.ROLLING_UPGRADE, params.version):
      conf_select.select(params.stack_name, "hive", params.version)
      stack_select.select("hive-server2", params.version)

Stack Tools

Similar to stack features, stack-selector and conf-selector tools are now stack-driven instead of hardcoding hdp-select and conf-select.. They are defined in stack_tools.json file under /HDP/2.0.6/properties  

And declared as part of the HDP stack configurations as a new property on /HDP/2.0.6/configuration/cluster-env.xml

...