Migrate test script from shell to python

- test.py needs to be called with 2 arguments : test_name and timeout
  - it will cd to test_name dir and use the test_name.yml from there
  - it will sleep for an amount of time equals to timeout in minutes
- it will perform health checks for containers. If healtcheck isn't enabled will check for running state
- it will run hooks inside the test_name dir ( .py and .sh) if there are any
- printing logs in any case

.travis.yml

@@ -6,12 +6,17 @@ addons:
       - docker-ce
 env:
   - VERSION=$TRAVIS_BRANCH
+language: python
+python:
+  - "3.6"
+install:
+  - pip install -r tests/requirements.txt
 
 script:
   # Default to mailu for DOCKER_ORG
   - if [ -z "$DOCKER_ORG" ]; then export DOCKER_ORG="mailu"; fi
   - docker-compose -f tests/build.yml build
-  - tests/compose/test-script.sh
+  - python tests/compose/test.py
 
 deploy:
   provider: script