Es restart in travis.

.travis.yml

@@ -8,6 +8,7 @@ env:
 services:
   - elasticsearch
 install:
+  - sudo service elasticsearch restart
   - sudo pip install -q sphinx --use-mirrors
   - wget -q -O conf.py https://raw.githubusercontent.com/ongr-io/docs-aggregator/master/source/conf-travis.py
   - mkdir _static