Added 2.3.4 version and bwc indices

core/src/main/java/org/elasticsearch/Version.java

@@ -69,6 +69,8 @@ public class Version {
     public static final Version V_2_3_2 = new Version(V_2_3_2_ID, org.apache.lucene.util.Version.LUCENE_5_5_0);
     public static final int V_2_3_3_ID = 2030399;
     public static final Version V_2_3_3 = new Version(V_2_3_3_ID, org.apache.lucene.util.Version.LUCENE_5_5_0);
+    public static final int V_2_3_4_ID = 2030499;
+    public static final Version V_2_3_4 = new Version(V_2_3_4_ID, org.apache.lucene.util.Version.LUCENE_5_5_0);
     public static final int V_5_0_0_alpha1_ID = 5000001;
     public static final Version V_5_0_0_alpha1 = new Version(V_5_0_0_alpha1_ID, org.apache.lucene.util.Version.LUCENE_6_0_0);
     public static final int V_5_0_0_alpha2_ID = 5000002;
@@ -102,6 +104,8 @@ public class Version {
                 return V_5_0_0_alpha2;
             case V_5_0_0_alpha1_ID:
                 return V_5_0_0_alpha1;
+            case V_2_3_4_ID:
+                return V_2_3_4;
             case V_2_3_3_ID:
                 return V_2_3_3;
             case V_2_3_2_ID: