You might have noticed that vCloud Director 9.0 no longer displays licensing metrics.
This was a conscious decision as already for some time the licensing is handled externally by vCloud Usage Meter and the metering in vCloud Director caused vCloud database bloat.
If for some reason you still need to have these metrics available in UI, vCloud API or vROps Management Pack you can enable license metering with this command on a cell. No need for reboot, just wait few minutes for the next data collection.
$VCLOUD_HOME/bin/cell-management-tool manage-config -n licensing.metrics.vm.enabled -v true