Hit a given http url and return the stats lines

def _fetch_url_data(self, url, username, password, verify, custom_headers):
        ''' Hit a given http url and return the stats lines '''
        # Try to fetch data from the stats URL

        auth = (username, password)
        url = "%s%s" % (url, STATS_URL)
        custom_headers.update(headers(self.agentConfig))

        self.log.debug("Fetching haproxy stats from url: %s" % url)

        response = requests.get(
            url, auth=auth, headers=custom_headers, verify=verify, timeout=self.default_integration_http_timeout
        )
        response.raise_for_status()

        # it only needs additional decoding in py3, so skip it if it's py2
        if PY2:
            return response.content.splitlines()
        else:
            content = response.content

            # If the content is a string, it can't be decoded again
            # But if it's bytes, it can be decoded.
            # So, check if it has the decode method
            decode_fn = getattr(content, "decode", None)
            if callable(decode_fn):
                content = content.decode('utf-8')

            return content.splitlines()