Don't be so wordy in requires('network') in case other tests

are added later, and skip the existing test if SSL is not available.

Lib/test/test_smtpnet.py

@@ -4,17 +4,14 @@ import unittest
 from test import test_support
 import smtplib
 
-test_support.requires(
-    "network",
-    "use of network resource is not enabled and "
-    "test requires Internet access for communication with smtp.gmail.com:465",
-    )
+test_support.requires("network")
 
 class SmtpSSLTest(unittest.TestCase):
     testServer = 'smtp.gmail.com'
     remotePort = 465
 
     def test_connect(self):
+        test_support.get_attribute(smtplib, 'SMTP_SSLX')
         server = smtplib.SMTP_SSL(self.testServer, self.remotePort)
         server.ehlo()
         server.quit()