Accomodate for control messages in dcp unit tests
Accomodate for control messages in dcp unit tests

Update dcp unit tests to accomodate the growing
number of control messages.

Change-Id: If05dc8fee1b301ad5cf1494071379d847a028dd9
Reviewed-on: http://review.couchbase.org/53961
Reviewed-by: Chiyoung Seo <fcffc23db27b19ee4ebba46695ee6b50e09216a2@couchbase.com>
Tested-by: Chiyoung Seo <fcffc23db27b19ee4ebba46695ee6b50e09216a2@couchbase.com>

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