UBUNTU: SAUCE: (noup) zfs to 0.6.5.6-0ubuntu19

UBUNTU: SAUCE: (noup) zfs to 0.6.5.6-0ubuntu19

BugLink: https://bugs.launchpad.net/bugs/1754584
Add ZFS 0.7.0 kernel ioctl binary compat shim, detect ZFS kernel driver
version and copy zfs ioctl command to the newer ZFS 0.7.0 ioctl command
layout.

This patch sync's the kernel drivers to the module fixes in userspace,
introduced in version zfsutils-linux 0.6.5.6-0ubuntu19.  No functional
change in the kernel drivers; this just adds compat structures to allow
userspace to copy ioctl data appropriately in the userspace tools.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>