LU-9119 lnet: increment per NI stats

LU-9119 lnet: increment per NI stats

Increment the per NI stats for messages being routed.
This will give a better view of the traffic distribution
over multiple peer interfaces.

Added extra trace messages to track the messages
sent and received.

Test-Parameters: trivial
Signed-off-by: Amir Shehata <amir.shehata@intel.com>
Change-Id: I213b1b36e9787d25705d91d091ad9e9c6a5b2ae8
Reviewed-on: https://review.whamcloud.com/26907
Tested-by: Jenkins
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Sonia Sharma <sonia.sharma@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>