Get the /product/<product> resource from LTD Keeper.

def get_product(config):
    """Get the /product/<product> resource from LTD Keeper.
    """
    product_url = config['keeper_url'] + '/products/{p}'.format(
        p=config['ltd_product'])
    r = requests.get(product_url)
    if r.status_code != 200:
        raise RuntimeError(r.json())
    product_info = r.json()
    return product_info