Remove absolute paths to udev rules and binaries for dracut

Since dracut functions can locate both udev rules and binaries, there is
no point in keeping absolute paths in the module setup script. It also
breaks the --sysroot option in dracut. This commit removes mentions to
absolute paths for binaries and udev rules.

Reviewed-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Reviewed-by: Andrew J. Hesford <ajh@sideband.org>
Signed-off-by: Savyasachee Jha <hi@savyasacheejha.com>
Closes #13010