This makes it so that /media/configdrive can be used for user-data and network configs.
Switch to triggering common user configs via a path unit. This is particularly useful for config drive so that a config drive can be mounted by something other than the udev triggered services, a bind mount when running in a container for example.
This unit will always be started, but will only do anything if a `cloud-config-url=<url>` token is provided in /proc/cmdline.
