Don't populate dead vbuckets during warmup
Don't populate dead vbuckets during warmup

Skip adding dead vbucket states during warmup to prevent occupying
unnecessary memory overhead, since we only care about active and
replica vbuckets anyways.

Change-Id: I331c06da4e09dd64c0351b78267c0206d0007e8f
Reviewed-on: http://review.couchbase.org/64143
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>

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