staging: lustre: DLC user/kernel space glue code

This is the sixth patch of a set of patches that enables DLC.

This patch enables the user space to call into the kernel space
DLC code.  Added handlers in the LNetCtl function to call
the new functions added for Dynamic Lnet Configuration

Signed-off-by: Amir Shehata <amir.shehata@intel.com>
ntel-bug-id: https://jira.hpdd.intel.com/browse/LU-2456
Reviewed-on: http://review.whamcloud.com/8023


Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>