check content appropriately, refs #20589

tests/test_apt_proxy.py

@@ -33,7 +33,7 @@ for s in conf_servers:
     try:
         url = "https://%s/old-releases.ubuntu.com/ubuntu/dists/lucid/Release.gpg" % v
         print('Checking url certificate %s' % url)
-        d = requests.get(url, verify=False)
+        d = requests.get(url, verify=False).text
         if not "BEGIN PGP SIGNATURE" in d:
             all_ok = False
             print('Unexpected content: %s' % d)