main/grub: add ZPOOL_VDEV_NAME_PATH=YES to grub.trigger
causes zpool to report full vdev paths
allows grub-probe to locate /boot on ZFS roots
Fixes errors: "grub-probe: error: failed to get canonical path of $zroot_vdev"
Edited by Alex
causes zpool to report full vdev paths
allows grub-probe to locate /boot on ZFS roots
Fixes errors: "grub-probe: error: failed to get canonical path of $zroot_vdev"