print out message traffic with -vv
print out message traffic with -vv

Change-Id: I591673e06f12d1da3d7921d55c59ce1bd426ca69
Reviewed-on: http://review.northscale.com/1734
Reviewed-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>
Tested-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>

membase/vbucketmigrator,zbase/vbucketmigrator,membase/vbucketmigrator,zbase/vbucketmigrator,zbase/vbucketmigrator,membase/vbucketmigrator,zbase/vbucketmigrator,membase/vbucketmigrator