Update ceph/s3-tests to latest, modified to 1.5.0
Update ceph/s3-tests to latest, modified to 1.5.0

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