Attempt to cache the packages installed by pip and pipenv to dramatically speed up the pipeline

.gitlab-ci.yml

@@ -2,6 +2,11 @@ image: python:3.6
 variables:
   GIT_SUBMODULE_STRATEGY: normal
 
+cache:
+  paths:
+    - ~/.cache/pip
+    - ~/.local/share/virtualenvs
+
 test:
   script:
     - pip install pipenv