Turns python-legacy CI back on in circle, fixes python-legacy test (#11326)

* Turns python-legacy CI back on in circle, fixes python-legacy test

* Installs python 2.7 into circleci node 3

* Python 2.7 version changed to 2.7

* Switches back to py2714

CI/circle_parallel.sh

@@ -59,6 +59,7 @@ elif [ "$NODE_INDEX" = "3" ]; then
   #sudo make altinstall
   pyenv install --list 
   pyenv install 3.6.3
+  pyenv install 2.7.14
   pyenv global 3.6.3
   python3 --version
 

pom.xml

@@ -1283,6 +1283,7 @@
                 <module>samples/client/petstore/python</module>
                 <module>samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent</module>
                 <module>samples/openapi3/client/petstore/python</module>
+                <module>samples/openapi3/client/petstore/python-legacy</module>
                 <!-- TODO comment out below when the test for typescript-nestjs is ready
                 <module>samples/client/petstore/typescript-nestjs-v6-provided-in-root</module>-->
                 <!-- comment out due to error `npm run build`

samples/openapi3/client/petstore/python-legacy/test/test_fake_api.py

@@ -13,7 +13,10 @@
 from __future__ import absolute_import
 
 import unittest
-from unittest.mock import patch
+try:
+    from unittest.mock import patch
+except ImportError:
+    from mock import patch
 
 import petstore_api
 from petstore_api.api.fake_api import FakeApi  # noqa: E501

samples/openapi3/client/petstore/python-legacy/test_python2.sh

@@ -20,6 +20,7 @@ fi
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
 
 ### run tests
+tox -l
 tox -e py27 || exit 1
 
 ### static analysis of code