Update list_objects riak_test module
Update list_objects riak_test module

Update the list objects riak_test module to test the max-keys, marker,
prefix, and delimiter options. Also verify the content of the
CommonPrefixes response element.

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