Register a job definition with AWS Batch, using a JSON

def register_job_definition(self, json_fpath):
        """Register a job definition with AWS Batch, using a JSON"""
        with open(json_fpath) as f:
            job_def = json.load(f)
        response = self._client.register_job_definition(**job_def)
        status_code = response['ResponseMetadata']['HTTPStatusCode']
        if status_code != 200:
            msg = 'Register job definition request received status code {0}:\n{1}'
            raise Exception(msg.format(status_code, response))
        return response