Fix application name

deploy/roles/catchall/tasks/sync.yml

@@ -30,6 +30,6 @@
       docker run --rm -v /etc/egi:/etc/egi:ro
       -v {{ site_config_dir }}:{{ site_config_mountpoint }}:ro
       -v /var/cache/image_sync:/atrope-state
-      {{ image_sync_image }} sites-sync
+      {{ image_sync_image }} image-sync
       --config-dir /etc/egi/image_sync >> /var/log/sync.log 2>&1
     cron_file: "egi-image-sync"