Make sure consumer stream request response is a valid consumer
Make sure consumer stream request response is a valid consumer

Change-Id: Ibb8be9d4a5cf6d8990fa1beeb9733feb33a6a0ab
Reviewed-on: http://review.couchbase.org/31583
Reviewed-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>
Tested-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>

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