public HadoopJarStepConfig newRunPigScriptStep(String script, String... scriptArgs) {
        return newRunPigScriptStep(script, "latest", scriptArgs);
    }
Step that runs a Pig script on your job flow using the default Pig version.

@param script
           The script to run.
@param scriptArgs
           Arguments that get passed to the script.
@return HadoopJarStepConfig that can be passed to your job flow.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/util/StepFactory.java