bst-docker-import: Consistently use stderr for all logs
Description
In !857 (merged), we added contrib/bst-docker-import script but it has a small
issue that some of logs go to stdout while others go to stderr. Fix it
so that all logging is done on stderr.
Changes proposed in this merge request:
- bst-docker-import: Consistently use stderr for all logs
This merge request, when approved, will close: