As a followup to https://issues.redhat.com/browse/OPNET-568 we should remove the triggering of resolv-prepender from the dispatcher script. There is still some other functionality in the dispatcher script that we need to keep, but once we have the systemd watch it won't be necessary to trigger the service from the script at all.

This is being tracked separately because it is a more invasive change than just adding the watch, so we probably don't want to backport it.