Log when we're disconnect a tap connection
Log when we're disconnect a tap connection

Change-Id: Ie7756cefcee5b20e391c48f3cb55bafded3b855b
Reviewed-on: http://review.membase.org/3722
Reviewed-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>
Tested-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>

hisundar/ep-engine,membase/ep-engine,couchbase/ep-engine,sriganes/ep-engine,hisundar/ep-engine,daverigby/kv_engine,daverigby/kv_engine,abhinavdangeti/ep-engine,teligent-ru/ep-engine,daverigby/ep-engine,membase/ep-engine,sriganes/ep-engine,couchbaselabs/ep-engine,couchbaselabs/ep-engine,teligent-ru/ep-engine,zbase/ep-engine,zbase/ep-engine,sriganes/ep-engine,couchbaselabs/ep-engine,jimwwalker/ep-engine,abhinavdangeti/ep-engine,daverigby/ep-engine,owendCB/ep-engine,daverigby/kv_engine,daverigby/ep-engine,hisundar/ep-engine,membase/ep-engine,couchbase/ep-engine,jimwwalker/ep-engine,couchbaselabs/ep-engine,hisundar/ep-engine,couchbase/ep-engine,zbase/ep-engine,daverigby/ep-engine,couchbase/ep-engine,membase/ep-engine,owendCB/ep-engine,owendCB/ep-engine,abhinavdangeti/ep-engine,jimwwalker/ep-engine,owendCB/ep-engine,teligent-ru/ep-engine,zbase/ep-engine,couchbaselabs/ep-engine,abhinavdangeti/ep-engine,zbase/ep-engine,teligent-ru/ep-engine,abhinavdangeti/ep-engine,daverigby/kv_engine,sriganes/ep-engine,jimwwalker/ep-engine