Update shippable.yml

Author: ci-test2

shippable.yml

@@ -9,8 +9,8 @@ install:
   #- pip install -r requirements.txt
   - if [[ $TRAVIS_PYTHON_VERSION == '3.2' ]]; then pip install coverage==3.7.1 codecov ; fi
 
-#services:
- # - postgres
+services:
+  - postgres
 
 build_image: drydock/u14pytall:tip
 #build_image: shippable/minv2