add boto3/moto to test requirements
add boto3/moto to test requirements

vrsource/mapproxy,drnextgis/mapproxy,camptocamp/mapproxy,vrsource/mapproxy,drnextgis/mapproxy,camptocamp/mapproxy,olt/mapproxy,olt/mapproxy,mapproxy/mapproxy,mapproxy/mapproxy