Fix zfs:AUTO autodetection in initramfs scripts
Don't exit early in find_rootfs() when zpool.bootfs
is set to zfs:AUTO.
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes #12658