Added submodule contents into tree

externals/mbedtls/tests/scripts/scripts_path.py

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+"""Add our Python library directory to the module search path.
+
+Usage:
+
+    import scripts_path # pylint: disable=unused-import
+"""
+
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+#
+
+import os
+import sys
+
+sys.path.append(os.path.join(os.path.dirname(__file__),
+                             os.path.pardir, os.path.pardir,
+                             'scripts'))