Change java

Author: stsewd

scripts/travis/install_elasticsearch.sh

@@ -5,6 +5,7 @@ then
     sudo apt-get install -y openjdk-7-jre
     java --version
     sudo update-java-alternatives --list
+    sudo update-java-alternatives --set java-1.7.0-openjdk-amd64
     java --version
     sudo apt-get purge -y elasticsearch
     wget https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-${ES_VERSION}.tar.gz