Bug 2815 - Fix to the sporadic test failure in duplicate items test
Bug 2815 - Fix to the sporadic test failure in duplicate items test

This test failure was caused by setting the vbucket deletion flag
to false before running the vbucket deletion on the disk.
This fix guarantees the vbucket deletion on the disk will be
always executed in case a given vbucket is removed and activated
immediately again.

Change-Id: I7d9b3b7e3442441ecdc8b4f781142f4799d9a04d
Reviewed-on: http://review.membase.org/3340
Reviewed-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>
Tested-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>

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