separate graphs for incoming/outgoing traffic
separate graphs for incoming/outgoing traffic

Change-Id: Ib7aeead4c0dd56f0ff33c0606adc48c5adb0d6bc
Reviewed-on: http://review.couchbase.org/33198
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>

couchbase/cbmonitor,couchbase/cbmonitor