[es] Upgrade to 5.1.1

Author: itzg

elasticsearch/Dockerfile

@@ -4,7 +4,7 @@ MAINTAINER itzg
 
 RUN apk -U add bash
 
-ENV ES_VERSION=5.0.2
+ENV ES_VERSION=5.1.1
 
 ADD https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-$ES_VERSION.tar.gz /tmp/es.tgz
 RUN cd /usr/share && \