MB-5373 Don't add non-vbucket DB files to CouchKVStore file map
MB-5373 Don't add non-vbucket DB files to CouchKVStore file map

Non-vbucket files like master.couch should not be hashed
into CouchKVStore's internal dbFileMap. This could cause
incorrect file mapping based on invalid conversion of
non-numeric string to wrong vbucket id during warmup.

Change-Id: I7ed224c7caace233961a1e8e7c01dd3dd7d415f7
Reviewed-on: http://review.couchbase.org/16388
Reviewed-by: Chiyoung Seo <8b279095f11c26cc21045fda5a3e51debb005aa9@gmail.com>
Tested-by: Chiyoung Seo <8b279095f11c26cc21045fda5a3e51debb005aa9@gmail.com>

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