Appends perturbed params to the trial name to show in the console.

def make_experiment_tag(orig_tag, config, mutations):
    """Appends perturbed params to the trial name to show in the console."""

    resolved_vars = {}
    for k in mutations.keys():
        resolved_vars[("config", k)] = config[k]
    return "{}@perturbed[{}]".format(orig_tag, format_vars(resolved_vars))