refresh fork from upstream repository

…rgs.

…tatus.

On child-process timeout, instead of merely returning a string containing
'FAIL - timed out', raise AssertionError so the calling test actually fails.
Adjust test_run_python_timeout() to expect that AssertionError.

Also, even when expect_pass=False, check child-process rc, and raise
AssertionError if it's not in the list of allowable values. Add a new keyword
parameter 'allow' whose default value is [0].

Modify tests.patcher_test.MonkeyPatch.test_typeerror(), which expects rc 1, to
pass allow=[1]. Modify patcher_test.ProcessBase.launch_subprocess() to pass
through arbitrary keyword arguments to run_python() to support that.

The new monkey_patch_socket_https_526.py test script depends on an 'openssl'
executable in the PATH. Using this, it creates temporary certificate files
with which to populate an SSLContext so that a local server can accept HTTPS
connections.

We run it by tests.openssl_test.test_https() calling run_isolated() to launch
a new Python interpreter without eventlet imports. For the same reason, the
test script uses multiprocessing to launch the server as a separate process.
Only the client code imports eventlet and uses monkey_patch(socket=True),
which drives the reported issue.

Print the child process output in addition to reporting its rc.

Fix tests.test_run_python_timeout() str/bytes mismatch.

At least not according to pycodestyle.

Also revert specifying exactly Python 3.7.3, which is no longer current.

Not all of our tox environments support the current version of requests.

Remove GreenSSLContext.wrap_socket() override, which
blows up with the original
TypeError: wrap_socket() got an unexpected keyword argument '_context'
exception. Instead, set GreenSSLContext.sslsocket_class to GreenSSLSocket,
which obviates the wrap_socket() override.

Also, for Python 3.7, remove GreenSSLSocket.__new__() override, which blows up
because SSLSocket._create() calls __new__() with (default) socket=None.

Python 3.7's SSLSocket._create() does the heavy lifting of instantiating
SSLSocket, whose __init__() method unconditionally raises TypeError to
discourage hand-constructing SSLSocket. Unfortunately, from SSLSocket's
subclass GreenSSLSocket, _create()'s super(SSLSocket, self).__init__(...) call
reaches SSLSocket.__init__(), producing that TypeError. Replicate base-class
_create() into GreenSSLSocket, except directly call socket.socket.__init__(),
which that call is intended to reach.