continuing to fight travis: new .yml config changes

.travis.yml

@@ -1,8 +1,9 @@
 language: ruby
 rvm:
   - "2.4.1"
-addons:
-  postgresql: "9.3"
+services:
+  - redis-server
+  - postgresql
 before_script:
   - psql -c 'create database travis_ci_test;' -U postgres
 sudo: false

config.yml.travis

@@ -1,6 +1,5 @@
 database: 'postgres://postgres@localhost/travis_ci_test'
 database_pool: 1
-redis_url: redis://localhost
 session_secret: 's3cr3t'
 recaptcha_public_key: '1234'
 recaptcha_private_key: '5678'