Following https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.1/bk_command-line-installation/content/downlo... I could not find hdp_manual_install_rpm_helper_files-22.214.171.124.129.tar.gz.
wget http://public-repo-1.hortonworks.com/HDP/tools/126.96.36.199/hdp_manual_install_rpm_helper_files-188.8.131.52.1... fails with 2017-08-25 02:05:45 ERROR 404: Not Found.
Latest version I could find is http://public-repo-1.hortonworks.com/HDP/tools/184.108.40.206/hdp_manual_install_rpm_helper_files-220.127.116.11.8....
Can I use that one for 18.104.22.168 as well?
I think you can safely use it as a reference. That's a minor release between 2.60.3 and 22.214.171.124 just simple bug fixes and errata so I would say YES .