[ci] explicitly declare mysql service postgresql 9.6

kares · kares · commit c996ee363bb5 · 2019-07-26T16:37:41.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,9 @@
 language: ruby
 sudo: false
+services:
+  - mysql
+addons:
+  postgresql: 9.6
 branches:
   only:
   - master
