print python3/pip3 versions to debug latest django_extensions problem

Former-commit-id: f3f2947e586e66faa94013f868645cd912294bee

.gitlab-ci.yml

@@ -12,6 +12,8 @@ test-centos7:
   - yum install -y gcc-c++
   - cd ippisite
   - pip3 install -r requirements.txt
+  - pip3 -V  #test pip3 version
+  - python3 -V # test python3 version
   - python3 manage.py test
 deploy-webserver:
   stage: deploy