new image for testing

.gitlab-ci.yml

@@ -8,7 +8,7 @@ test-py3.4:
   stage: py34
   script:
   - pip3 install -r requirements.txt
-  - python3.4 -m pytest --cov rpg tests
+  - py.test --cov rpg tests
 test-py3.5:
   image: python:3.5
   stage: py35