The following command will block for 60s(default) when the network is slow or unavailable:
```
rclone --contimeout 10s --low-level-retries 0 lsd dropbox:
```
This change will make it timeout after the expected 10s.
Signed-off-by: rkonfj <rkonfj@gmail.com>
Reapply missing bwlimiting which was inserted in
0a932dc1f2 Add --bwlimit for upload and download #1873
But accidentally removed when merging
edfe183ba2 fshttp: add DSCP support with --dscp for QoS with differentiated services