Test deleting a nonexistent object
Test deleting a nonexistent object

AZ885

* make sure that deleting an object that doesn't exist works

dragonfax/riak_cs,GabrielNicolasAvellaneda/riak_cs,basho/riak_cs,basho/riak_cs,yangchengjian/riak_cs,laurenrother/riak_cs,GabrielNicolasAvellaneda/riak_cs,yangchengjian/riak_cs,basho/riak_cs_lfs,sdebnath/riak_cs,dragonfax/riak_cs,laurenrother/riak_cs,laurenrother/riak_cs,GabrielNicolasAvellaneda/riak_cs,GabrielNicolasAvellaneda/riak_cs,dragonfax/riak_cs,basho/riak_cs,yangchengjian/riak_cs,basho/riak_cs,basho/riak_cs_report,sdebnath/riak_cs,sdebnath/riak_cs,dragonfax/riak_cs,laurenrother/riak_cs,yangchengjian/riak_cs,sdebnath/riak_cs