Fix env

Author: ericholscher

.travis.yml

@@ -1,12 +1,10 @@
 language: python
 python:
   - 3.6
-env:
-  - ES_VERSION=6.2.4 ES_DOWNLOAD_URL=https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-${ES_VERSION}.tar.gz
 matrix:
   include:
     - python: 3.6
-      env: TOXENV=py36 ES_VERSION=1.3.9 ES_DOWNLOAD_URL=https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-${ES_VERSION}.tar.gz
+      env: TOXENV=py36 ES_VERSION=6.2.4 ES_DOWNLOAD_URL=https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-${ES_VERSION}.tar.gz
     - python: 3.6
       env: TOXENV=docs
     - python: 3.6