Add tests for python client with disallowAdditionalPropertiesIfNotPresent set to true (#16690)

* add tests for python client with different option

* update samples

* update tests

samples/client/echo_api/python-disallowAdditionalPropertiesIfNotPresent-true/setup.py

@@ -0,0 +1,52 @@
+# coding: utf-8
+
+"""
+    Echo Server API
+
+    Echo Server API
+
+    The version of the OpenAPI document: 0.1.0
+    Contact: team@openapitools.org
+    Generated by OpenAPI Generator (https://openapi-generator.tech)
+
+    Do not edit the class manually.
+"""  # noqa: E501
+
+
+from setuptools import setup, find_packages  # noqa: H301
+
+# To install the library, run the following
+#
+# python setup.py install
+#
+# prerequisite: setuptools
+# http://pypi.python.org/pypi/setuptools
+NAME = "openapi-client"
+VERSION = "1.0.0"
+PYTHON_REQUIRES = ">=3.7"
+REQUIRES = [
+    "urllib3 >= 1.25.3, < 2.1.0",
+    "python-dateutil",
+    "pydantic >= 2",
+    "aenum",
+    "typing-extensions >= 4.7.1",
+]
+
+setup(
+    name=NAME,
+    version=VERSION,
+    description="Echo Server API",
+    author="OpenAPI Generator community",
+    author_email="team@openapitools.org",
+    url="",
+    keywords=["OpenAPI", "OpenAPI-Generator", "Echo Server API"],
+    install_requires=REQUIRES,
+    packages=find_packages(exclude=["test", "tests"]),
+    include_package_data=True,
+    license="Apache 2.0",
+    long_description_content_type='text/markdown',
+    long_description="""\
+    Echo Server API
+    """,  # noqa: E501
+    package_data={"openapi_client": ["py.typed"]},
+)