parses response output of AWS describe commands and returns the first (and only) item in array
    :param text: describe output
    :return: image json

def parse_image_json(text):
    """
    parses response output of AWS describe commands and returns the first (and only) item in array
    :param text: describe output
    :return: image json
    """
    image_details = json.loads(text)
    if image_details.get('Images') is not None:
        try:
            image_details = image_details.get('Images')[0]
        except IndexError:
            image_details = None
    return image_details