Add more test coverage for s3 assetstore adapter
Add more test coverage for s3 assetstore adapter

opadron/girder,msmolens/girder,adsorensen/girder,jbeezley/girder,data-exp-lab/girder,chrismattmann/girder,chrismattmann/girder,chrismattmann/girder,jcfr/girder,Xarthisius/girder,jcfr/girder,essamjoubori/girder,kotfic/girder,adsorensen/girder,girder/girder,jcfr/girder,Kitware/girder,Kitware/girder,Kitware/girder,RafaelPalomar/girder,RafaelPalomar/girder,chrismattmann/girder,manthey/girder,essamjoubori/girder,Xarthisius/girder,sutartmelson/girder,kotfic/girder,RafaelPalomar/girder,data-exp-lab/girder,opadron/girder,manthey/girder,kotfic/girder,chrismattmann/girder,Xarthisius/girder,sutartmelson/girder,msmolens/girder,kotfic/girder,girder/girder,adsorensen/girder,manthey/girder,jcfr/girder,msmolens/girder,sutartmelson/girder,opadron/girder,kotfic/girder,adsorensen/girder,salamb/girder,adsorensen/girder,data-exp-lab/girder,Kitware/girder,msmolens/girder,msmolens/girder,data-exp-lab/girder,sutartmelson/girder,essamjoubori/girder,salamb/girder,Xarthisius/girder,salamb/girder,manthey/girder,RafaelPalomar/girder,opadron/girder,girder/girder,opadron/girder,sutartmelson/girder,essamjoubori/girder,jbeezley/girder,RafaelPalomar/girder,salamb/girder,salamb/girder,jcfr/girder,data-exp-lab/girder,jbeezley/girder,girder/girder,Xarthisius/girder,essamjoubori/girder,jbeezley/girder