scp -> rsync to avoid copying *.jar files
scp -> rsync to avoid copying *.jar files

Use rsync instead of scp in order to use the
`--exclude` feature, plus `rsync` is just nicer
to work with in general.

The `--exclude` feature is important because
currently a bunch of `jar` files get copied
in addition to the logs!

opensyllabus/osp-pipeline,opensyllabus/osp-pipeline