Fixes #2307. Support local uploads into S3 assetstores
Fixes #2307. Support local uploads into S3 assetstores

kotfic/girder,data-exp-lab/girder,RafaelPalomar/girder,RafaelPalomar/girder,Kitware/girder,manthey/girder,girder/girder,manthey/girder,Kitware/girder,jbeezley/girder,Xarthisius/girder,Xarthisius/girder,jbeezley/girder,kotfic/girder,RafaelPalomar/girder,Kitware/girder,data-exp-lab/girder,data-exp-lab/girder,kotfic/girder,RafaelPalomar/girder,girder/girder,jbeezley/girder,Kitware/girder,Xarthisius/girder,manthey/girder,data-exp-lab/girder,adsorensen/girder,adsorensen/girder,jbeezley/girder,Xarthisius/girder,adsorensen/girder,adsorensen/girder,Xarthisius/girder,manthey/girder,adsorensen/girder,data-exp-lab/girder,kotfic/girder,girder/girder,girder/girder,RafaelPalomar/girder,kotfic/girder