Turn down "Transfer in progress" message frequency #2017
Description
There is a "Transfer in progress" log message in claims_hosp (aka hospital-admissions) and doctor_vists that is used in a callback with the paramiko sftp client. In practice, this log message can print hundreds of times a second, filling up log files with useless information. We should update the callback to have some state so it only prints once "per percent", or remove it.