Update rtcs module to use erlcloud_s3:new/8 instead of erlcloud_s3:new/7
Update rtcs module to use erlcloud_s3:new/8 instead of erlcloud_s3:new/7

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