[python] Renames python generators (#7965)

* python->python-legacy, python-experimental->python

* test with openjdk8

* test with openjdk11

* comment out rm

* move kotlin tests to circleci

* move kotlin tests

* move tests to circleci

* fix circleci

* rearrange test

* move tests

* use wrapper

Co-authored-by: Justin Black <justin.a.black@gmail.com>

samples/client/petstore/python/test/test_parent.py

@@ -0,0 +1,48 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+from __future__ import absolute_import
+import sys
+import unittest
+
+import petstore_api
+try:
+    from petstore_api.model import grandparent
+except ImportError:
+    grandparent = sys.modules[
+        'petstore_api.model.grandparent']
+try:
+    from petstore_api.model import parent_all_of
+except ImportError:
+    parent_all_of = sys.modules[
+        'petstore_api.model.parent_all_of']
+from petstore_api.model.parent import Parent
+
+
+class TestParent(unittest.TestCase):
+    """Parent unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testParent(self):
+        """Test Parent"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Parent()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()