The admin guide still document usage of engine-iso-uploader / ovirt-iso-uploader which was deprecated in 4.3 and dropped in 4.4. Need to remove it from 4.4 documentation.
Section is https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.4/html/administration_guide/chap-utilities_rhv_backup_restore#sect-The_ISO_Uploader_Tool
Removal applies to oVirt too.
PR https://github.com/oVirt/ovirt-site/pull/2860 was peer reviewed by Donna Dacosta and merged