bhyve: CPU topology support
bhyve: check ISO's CRC SHA256 sum (optional)
bhyve: an existing bridge can be selected (for those who customize/setup the interface themselves)
bhyve: Sparse ZVOL now by default. Can be reassigned via zfs_create_sparse="0" in $workdir/etc/zfs.conf
bhyve: grub-bhyve dependency has been removed: CBSD support OS only via UEFI due to the poor and unstable implementation of the grub-bhyve method, which is terrible