bpo-26867: Ubuntu's openssl OP_NO_SSLv3 is forced on by default; fix test. (GH-374)

Lib/test/test_ssl.py

@@ -777,7 +777,8 @@ class ContextTests(unittest.TestCase):
             ctx.options = (ctx.options & ~ssl.OP_NO_TLSv1)
             self.assertEqual(default, ctx.options)
             ctx.options = 0
-            self.assertEqual(0, ctx.options)
+            # Ubuntu has OP_NO_SSLv3 forced on by default
+            self.assertEqual(0, ctx.options & ~ssl.OP_NO_SSLv3)
         else:
             with self.assertRaises(ValueError):
                 ctx.options = 0