LU-6034 lnet: add default case for check summing

LU-6034 lnet: add default case for check summing

To avoid breaking backwards ioctl compatiability
this patch adds data fields to ioctl data structures
to report the check summing algorithims supported

Change-Id: Idb5fd6633a7f7c2e04bb582f122d625dd95afb25
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Reviewed-on: http://review.whamcloud.com/13092
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Isaac Huang <he.huang@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>