+ Adding in script to setup python package requirements

* Also I've updated the docker image that this pipeline uses as it didn't have node
and pip installed for some reason
Link to relevant docker image: https://hub.docker.com/r/shockrah/fc-pipeline

.gitlab-ci.yml

@@ -202,6 +202,10 @@ full-mock-tests:
     - build-keys
 
   script:
+    - cd json-api/client-tests/ 
+    - virtualenv .
+    - source bin/activate && pip install -r requirements.txt 
+    - cd ../../
     - bash scripts/build-db.sh
     - bash scripts/run-api-tests.sh