With curl-7.61.1 cookies are sorted by creation-time¹. Sort the output
used in the 'cookies stored in http.cookiefile when http.savecookies
set' test before comparing it to the expected cookies.
¹ https://github.com/curl/curl/commit/e2ef8d6fa ("cookies: support
creation-time attribute for cookies", 2018-08-28)
