Update wolfSSL to the latest version(v.4.4.0) (#186)

* deleted old version wolfSSL before updating

* updated wolfSSL to the latest version(v4.4.0)

* updated wolfSSL to the latest version(v4.4.0)

* added macros for timing resistance

Co-authored-by: RichardBarry <3073890+RichardBarry@users.noreply.github.com>
Co-authored-by: Ming Yue <mingyue86010@gmail.com>

FreeRTOS-Plus/Source/WolfSSL/wrapper/python/wolfssl/test/conftest.py

@@ -0,0 +1,47 @@
+# -*- coding: utf-8 -*-
+#
+# conftest.py
+#
+# Copyright (C) 2006-2020 wolfSSL Inc.
+#
+# This file is part of wolfSSL.
+#
+# wolfSSL is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# wolfSSL is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+#/
+
+# pylint: disable=missing-docstring, redefined-outer-name
+
+import sys
+import ssl
+import wolfssl
+import pytest
+
+@pytest.fixture
+def tcp_socket():
+    import socket
+    from contextlib import closing
+
+    with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as sock:
+        yield sock
+
+@pytest.fixture(
+    params=[ssl, wolfssl]  if sys.version_info.major == 3 else [wolfssl],
+    ids=["ssl", "wolfssl"] if sys.version_info.major == 3 else ["wolfssl"])
+def ssl_provider(request):
+    return request.param
+
+@pytest.fixture
+def ssl_context(ssl_provider):
+    return ssl_provider.SSLContext(ssl_provider.PROTOCOL_SSLv23)