Add dist job

@@ -8,19 +8,16 @@ before_script:
   - ./configure --enable-gcov
 
 build:
- stage:
-  - build
+ stage: build
  script:
   - make
 
 test:
- stage:
-  - test
+ stage: test
  script:
   - make coverage-html
 
 dist:
- stage:
-  - deploy
+ stage: deploy
  script:
   - make dist