Move to 16.04 base sandbox images.
Move to 16.04 base sandbox images.

Stanford-Online/configuration,rue89-tech/configuration,hastexo/edx-configuration,gsehub/configuration,jorgeomarmh/configuration,Stanford-Online/configuration,gsehub/configuration,EDUlib/configuration,edx/configuration,Stanford-Online/configuration,armaan/edx-configuration,Stanford-Online/configuration,armaan/edx-configuration,EDUlib/configuration,proversity-org/configuration,jorgeomarmh/configuration,armaan/edx-configuration,rue89-tech/configuration,mitodl/configuration,arbrandes/edx-configuration,arbrandes/edx-configuration,edx/configuration,hks-epod/configuration,appsembler/configuration,Stanford-Online/configuration,arbrandes/edx-configuration,appsembler/configuration,gsehub/configuration,proversity-org/configuration,EDUlib/configuration,arbrandes/edx-configuration,rue89-tech/configuration,open-craft/configuration,arbrandes/edx-configuration,open-craft/configuration,armaan/edx-configuration,rue89-tech/configuration,stvstnfrd/configuration,gsehub/configuration,hastexo/edx-configuration,appsembler/configuration,EDUlib/configuration,hks-epod/configuration,proversity-org/configuration,hastexo/edx-configuration,hks-epod/configuration,rue89-tech/configuration,open-craft/configuration,michaelsteiner19/open-edx-configuration,EDUlib/configuration,edx/configuration,michaelsteiner19/open-edx-configuration,appsembler/configuration,proversity-org/configuration,hks-epod/configuration,gsehub/configuration,proversity-org/configuration,hastexo/edx-configuration,stvstnfrd/configuration,edx/configuration,hks-epod/configuration,mitodl/configuration,stvstnfrd/configuration,open-craft/configuration,hastexo/edx-configuration,michaelsteiner19/open-edx-configuration,michaelsteiner19/open-edx-configuration,mitodl/configuration,stvstnfrd/configuration,stvstnfrd/configuration,mitodl/configuration,jorgeomarmh/configuration,jorgeomarmh/configuration