Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -40,7 +40,7 @@ unit-test-job:   # This job runs in the test stage.
   script:
     - echo "Running unit tests..."
     - apt-get -y update
-    - apt-get -y install python3
+    - apt-get -y install python3 git
     - source ansible/bin/activate
     - ansible-galaxy install -r requirements.yml
     - ansible-playbook site.yml -b -l localhost