sqs-to-dc should support `--no-sign-request` like s3-to-dc for s3 file load

[Pin Jin]

Encountered an error when trying to setup a test case for handle_bucket_notification_message where s3 object cannot load without a proper aws access secret key and id, s3-to-dc has --no-sign-request as an option, this option should be adapted in sqs-to-dc as well

                try:
                    s3 = boto3.resource("s3")
                    obj = s3.Object(bucket_name, key).get(ResponseCacheControl="no-cache")
                    data = safe_load(obj["Body"].read())
                    uri = f"s3://{bucket_name}/{key}"
                except Exception as e:
>                   raise IndexingException(
                        f"Exception thrown when trying to load s3 object: {e}"
                    )
E                   odc.apps.dc_tools.utils.IndexingException: Exception thrown when trying to load s3 object: An error occurred (InvalidAccessKeyId) when calling the GetObject operation: The AWS Access Key Id you provided does not exist in our records.