Mismatch between scripts/config/ci_linux.json and ivas_modes.json

The addition of the ISM+{1,2,3,4} configurations for extended metadata seem to have created a mismatch between the scripts/config/ivas_modes.json that lists the modes and the available input configurations in scripts/config/ci_linux.json.

For instance, the command below does not work since the configuration ISM4 is not found in the ci_linux.json.

./scripts/runIvasCodec.py -C ISM+4 -p scripts/config/ci_linux.json -U 1 --oc BINAURAL

Looking at the PlanarSBA, it reuses the "SBA" in_config, so it seems reasonable to do the same for ISM+{1,2,3,4}.