update to Elasticsearch 2.3.1

Author: jprante

build.gradle

@@ -1,3 +1,4 @@
+
 buildscript {
     repositories {
         mavenCentral()
@@ -14,9 +15,6 @@ plugins {
     id 'org.ajoberstar.grgit' version '1.4.2'
 }
 
-group = 'org.xbib.elasticsearch.plugin'
-version = '2.3.0.0'
-
 apply plugin: 'java'
 apply plugin: 'maven'
 apply plugin: 'signing'
@@ -27,6 +25,9 @@ println "Gradle: " + gradle.gradleVersion + " JVM: " + org.gradle.internal.jvm.J
 println "Build: group: '${project.group}', name: '${project.name}', version: '${project.version}'"
 println "Timestamp: " + java.time.Instant.now().atZone(java.time.ZoneId.systemDefault()).toString()
 
+group = 'org.xbib.elasticsearch.plugin'
+version = '2.3.1.0'
+
 ext {
     pluginName = 'knapsack'
     pluginClassname  = 'org.xbib.elasticsearch.plugin.knapsack.KnapsackPlugin'
@@ -37,8 +38,8 @@ ext {
     scmConnection = 'scm:git:git://github.com/' + user + '/' + name + '.git'
     scmDeveloperConnection = 'scm:git:git://github.com/' + user + '/' + name + '.git'
     versions = [
-        'elasticsearch' : '2.3.0',
-        'elasticsearch-helper' : '2.3.0.0',
+        'elasticsearch' : '2.3.1',
+        'elasticsearch-helper' : '2.3.1.0',
         'log4j': '2.5',
         'junit' : '4.12',
         'wagon' : '2.10'