Fix ssh/scp/rsync sandboxing

Change-Id: I1e94c028fafa78d4792a50790a76ab32bc4e10b2
Signed-off-by: James Kuszmaul <jabukuszmaul+collab@gmail.com>
diff --git a/frc971/downloader/downloader.py b/frc971/downloader/downloader.py
index d21d8bd..a962d5b 100644
--- a/frc971/downloader/downloader.py
+++ b/frc971/downloader/downloader.py
@@ -126,7 +126,7 @@
             os.chmod(os.path.join(temp_dir, "starterd"), 0o775 | stat.S_ISUID)
 
         rsync_cmd = ([
-            "external/rsync/usr/bin/rsync",
+            "external/rsync/rsync",
             "-e",
             ssh_path,
             "-c",