LU-9425 lnd: Turn on 2 sges by default

Currently, the fix in LU-5718 which allows for multiple sges
to deal with RDMA fragmentation is turned off by deafult
(set to 1).  This patch changes the default to 2 so
RDMA fragmentation is fixed by default.

Test-Parameters: trivial
Signed-off-by: Doug Oucharek <doug.s.oucharek@intel.com>
Change-Id: I8a29a7b32ababd37cbc471664083362bc7253d97
Reviewed-on: https://review.whamcloud.com/26911


Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Ned Bass <bass6@llnl.gov>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>

lnet/klnds/o2iblnd/o2iblnd_modparams.c

@@ -152,7 +152,7 @@ static int use_privileged_port = 1;
 module_param(use_privileged_port, int, 0644);
 MODULE_PARM_DESC(use_privileged_port, "use privileged port when initiating connection");
 
-static unsigned int wrq_sge = 1;
+static unsigned int wrq_sge = 2;
 module_param(wrq_sge, uint, 0444);
 MODULE_PARM_DESC(wrq_sge, "# scatter/gather element per work request");