Switch artifact uploads SSH port

The SSH server on the Aurora system, operating on port 22, is consistently under probing attempts by attackers. Enhancing security on the server can be achieved by transitioning to port 7711. The pipeline is now configured to use the new SSH port of the Aurora server.

The new upload_port variable is available in the pipeline and inserted in the SSH and RSYNC command to use this new port.

Phabricator task: T10209

Signed-off-by: Pablo Vigo pvigo@collabora.com