LU-3322 ko2iblnd: Support different configs between systems

LU-3322 ko2iblnd: Support different configs between systems

This patch adds suppoort for ko2iblnd to have different values for
peer_credits and map_on_demand between systems.

Signed-off-by: Jeremy Filizetti <jeremy.filizetti@gmail.com>
Change-Id: Idfe5acdfdde5c2185488b92c96d7a83f1705a556
Reviewed-on: http://review.whamcloud.com/11794
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Amir Shehata <amir.shehata@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>