Bump elasticsearch from to 2.4 to 5.3.0

Author: oalders

Diff for: docker-compose.yml

@@ -233,7 +233,7 @@ services:
   #
 
   elasticsearch:
-    image: elasticsearch:2.4
+    image: elasticsearch:5.3.0
     volumes:
       - type: volume
         source: elasticsearch
@@ -265,7 +265,7 @@ services:
   #
 
   elasticsearch_test:
-    image: elasticsearch:2.4
+    image: elasticsearch:5.3.0
     volumes:
       - type: volume
         source: elasticsearch_test