Handle the 5.6.0 release

Author: hub-cap

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

@@ -92,6 +92,8 @@ public class Version implements Comparable<Version> {
     public static final Version V_5_5_3 = new Version(V_5_5_3_ID, org.apache.lucene.util.Version.LUCENE_6_6_0);
     public static final int V_5_6_0_ID = 5060099;
     public static final Version V_5_6_0 = new Version(V_5_6_0_ID, org.apache.lucene.util.Version.LUCENE_6_6_0);
+    public static final int V_5_6_1_ID = 5060199;
+    public static final Version V_5_6_1 = new Version(V_5_6_1_ID, org.apache.lucene.util.Version.LUCENE_6_6_0);
     public static final int V_6_0_0_alpha1_ID = 6000001;
     public static final Version V_6_0_0_alpha1 =
             new Version(V_6_0_0_alpha1_ID, org.apache.lucene.util.Version.LUCENE_7_0_0);
@@ -142,6 +144,8 @@ public static Version fromId(int id) {
                 return V_6_0_0_alpha2;
             case V_6_0_0_alpha1_ID:
                 return V_6_0_0_alpha1;
+            case V_5_6_1_ID:
+                return V_5_6_1;
             case V_5_6_0_ID:
                 return V_5_6_0;
             case V_5_5_3_ID: