[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/openapi3/client/extensions/x-auth-id-alias/python/.openapi-generator/FILES

@@ -0,0 +1,23 @@
+.gitignore
+.gitlab-ci.yml
+.travis.yml
+README.md
+docs/UsageApi.md
+git_push.sh
+requirements.txt
+setup.cfg
+setup.py
+test-requirements.txt
+test/__init__.py
+tox.ini
+x_auth_id_alias/__init__.py
+x_auth_id_alias/api/__init__.py
+x_auth_id_alias/api/usage_api.py
+x_auth_id_alias/api_client.py
+x_auth_id_alias/apis/__init__.py
+x_auth_id_alias/configuration.py
+x_auth_id_alias/exceptions.py
+x_auth_id_alias/model_utils.py
+x_auth_id_alias/models/__init__.py
+x_auth_id_alias/models/__init__.py
+x_auth_id_alias/rest.py

samples/openapi3/client/extensions/x-auth-id-alias/python/.openapi-generator/VERSION

@@ -0,0 +1 @@
+5.0.0-SNAPSHOT