TriggerJobOpts: Clean up transient ByteStream configuration
- Split the one big function in
TriggerTransBSConfig.pyinto individual functions per system.
- Still provide a combined function merging all systems in case it's needed.
- Include only the Calo transient BS configuration and drop all the others in the standard Trigger top-level job options. AFAIK Calo is the only client of this, so running all the other conversions is just a waste of resources.