Make sure sensitive information is not logged

[olevski]

There may be cases where we end up logging sensitive information in the logs. We should check and correct all such instances.

In some cases we may do this because we take the rclone logs and dump them to stdout. But we run rclone in a separate process as a shell command. So if the problem is that rclone is dumping sensitive info then moving to running rclone as a go package rather than a shell command should help.