5104 reboot should check for (and remove) extra -B zfs-bootfs options.
Reviewed by: Garrett D'Amore <garrett@damore.org>
Reviewed by: Josef 'Jeff' Sipek <josef.sipek@nexenta.com>
Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com>
Reviewed by: Hans Rosenfeld <hans.rosenfeld@nexenta.com>
Approved by: Gordon Ross <gwr@nexenta.com>