Added by ttereshc about 2 years ago
Fix incremental publish for yum_repo_metadata_file content
Old way of publishing yum_repo_metadata_file content was to create a symlink. Recently yum_repo_metadata_file content started to be copied at publish time. This fix affects upgrade cases, when yum_repo_metadata_file was published the old way, but incremental publish happened in a new way.
(cherry picked from commit 24e86fd9ff63dda285cc2faf44bec8c8811b116c)