RE: MX204 tunnel services BW

JTAC says we must disable a physical port to allocate BW for tunnel-services. Also leaving tunnel-services bandwidth unspecified is not possible on the 204. I haven't independently tested / validated in lab yet, but this is what they have told me. I advised JTAC to update the MX204 "port-checker" tool with a tunnel-services knob to make this caveat more apparent.