Travis: build stages: run test_quick first

Author: blueyed

.travis.yml

@@ -3,5 +3,9 @@ sudo: false
 services:
   - docker
 
-script: |
-  make test
+jobs:
+  include:
+    - stage: test_quick
+      script: make test_quick
+    - stage: test
+      script: make test