MRP-1285 bulk: abort bulk after reconnect

After MRP-459, reconnection does not abort bulk request, so it
will wait at_max. No need to wait bulk data from client after
reconnection, client change xid for brw. This patch abort bulk io
if export connection count is greater than connection count for brw
request.

Signed-off-by: Alexander Boyko <alexander_boyko@xyratex.com>
Change-Id: I46bf20480843617e877ca939b4509c05cc2f150b
Reviewed-by: Alexey Lyashkov <Alexey_Lyashkov@xyratex.com>
Reviewed-by: Sergey Cheremencev <Sergey_Cheremencev@xyratex.com>
Tested-by: Elena Gryaznova <Elena_Gryaznova@xyratex.com>
Reviewed-by: Vitaly Fertman <Vitaly_Fertman@xyratex.com>
MRP-1285 at: net AT after connect

once connected, the previously gathered AT statistics is not valid
anymore because may reflect other routing, etc. The connect by itself
could take a long time due to different reasons (e.g. server was not
ready) and net latency got very high (see import_select_connection())
what does not reflect the current situation.

Take into account only the current (re-)CONNECT rpc latency.

Signed-off-by: Vitaly Fertman <vitaly_fertman@xyratex.com>
Change-Id: I8c69de56875c2fe64a5350e055dddd024df9d116
Reviewed-by: Alexander Boyko <alexander_boyko@xyratex.com>
Reviewed-by: Alexey Lyashkov <alexey_lyashkov@xyratex.com>
Tested-by: Elena Gryaznova <elena_gryaznova@xyratex.com>