bootfs_006_pos zfs test needs to be updated
/opt/zfs-tests/tests/functional/bootfs/bootfs_006_pos test verifies that the
bootfs zpool property can only be set on zpools that support booting. With the integration of #12894, the supported zpool configurations have increased, but the test wasn't updated to reflect the new supported configurations (such as striped zpools). They should be updated to support the currently supported bootable zpools.