'make test' runs all the network tests.

Some of the tests in test_ssl fail instead of skip if svn.python.org is not accessible.

$ ./python -m test -v -u all test_ssl

======================================================================
ERROR: test_non_blocking_connect_ex (test.test_ssl.NetworkedTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/vinson/workspace/cpython-master/Lib/test/test_ssl.py", line 1404, in test_non_blocking_connect_ex
    s.do_handshake()
  File "Lib/ssl.py", line 978, in do_handshake
    self._check_connected()
  File "Lib/ssl.py", line 776, in _check_connected
    self.getpeername()
OSError: [Errno 107] Transport endpoint is not connected

======================================================================
FAIL: test_connect_ex (test.test_ssl.NetworkedTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "Lib/test/test_ssl.py", line 1381, in test_connect_ex
    self.assertEqual(0, s.connect_ex(("svn.python.org", 443)))
AssertionError: 0 != 111

======================================================================
FAIL: test_timeout_connect_ex (test.test_ssl.NetworkedTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "Lib/test/test_ssl.py", line 1428, in test_timeout_connect_ex
    self.assertIn(rc, (errno.EAGAIN, errno.EWOULDBLOCK))
AssertionError: 111 not found in (11, 11)

----------------------------------------------------------------------
Ran 117 tests in 3.123s

FAILED (failures=2, errors=1, skipped=20)
test test_ssl failed
1 test failed:
    test_ssl