Merge branch 'add-cov' into 'master'

Add test coverage report

See merge request autonomic-cooperative/ojuso-map!3

.gitlab-ci.yml

@@ -28,4 +28,4 @@ pytest:
     - pip install -r test_requirements.txt
     - apt-get update && cat system-requirements.txt | xargs apt-get install -y
   script:
-    - pytest -v
+    - pytest -v --cov=ojusomap

test_requirements.txt

@@ -1,3 +1,4 @@
 -r requirements.txt
 pytest==3.5.0
 pytest-django==3.1.2
+pytest-cov==2.5.1