Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -40,4 +40,8 @@ unit-test-job:   # This job runs in the test stage.
   script:
     - echo "Running unit tests..."
     - source ansible/bin/activate
+    - ansible --version
+    - which ansible-playbook
+    - which python3
+    - which python
     - ansible-playbook site.yml -b -l localhost