correct validation for set_vbucket_state
correct validation for set_vbucket_state

Change-Id: Ia671690964584fbeb92c97213dc180f2b50936a9
Reviewed-on: http://review.couchbase.org/33428
Tested-by: Artem Stemkovski <15a0730a27c69f62ab86f2b6c639fca202166c02@couchbase.com>
Reviewed-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>

daverigby/kv_engine,daverigby/memcached,mrkwse/memcached,owendCB/memcached,mrkwse/memcached,cloudrain21/memcached-1,owendCB/memcached,couchbase/memcached,daverigby/kv_engine,couchbase/memcached,cloudrain21/memcached-1,jimwwalker/memcached,daverigby/memcached,owendCB/memcached,mrkwse/memcached,daverigby/kv_engine,owendCB/memcached,mrkwse/memcached,daverigby/memcached,couchbase/memcached,daverigby/memcached,cloudrain21/memcached-1,jimwwalker/memcached,cloudrain21/memcached-1,jimwwalker/memcached,daverigby/kv_engine,couchbase/memcached