[CI] Test if Travis needs elasticsearch listed as a service in the config

Author: estolfo

.travis.yml

@@ -10,7 +10,6 @@ language: ruby
 
 services:
   - mongodb
-  - elasticsearch
 
 branches:
   only:
@@ -53,7 +52,7 @@ before_install:
   - wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-${ELASTICSEARCH_VERSION}.deb.sha512
   - shasum -a 512 -c elasticsearch-${ELASTICSEARCH_VERSION}.deb.sha512
   - sudo dpkg -i --force-confnew elasticsearch-${ELASTICSEARCH_VERSION}.deb
-  - sudo service elasticsearch restart
+  - sudo service elasticsearch start
   - gem update --system -q
   - gem update bundler -q
   - gem --version