Add version 6.0.0-beta2 after release

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

@@ -99,6 +99,9 @@ public class Version implements Comparable<Version> {
     public static final int V_6_0_0_beta1_ID = 6000026;
     public static final Version V_6_0_0_beta1 =
         new Version(V_6_0_0_beta1_ID, org.apache.lucene.util.Version.LUCENE_7_0_0);
+    public static final int V_6_0_0_beta2_ID = 6000027;
+    public static final Version V_6_0_0_beta2 =
+        new Version(V_6_0_0_beta2_ID, org.apache.lucene.util.Version.LUCENE_7_0_0);
     public static final int V_6_1_0_ID = 6010099;
     public static final Version V_6_1_0 =
         new Version(V_6_1_0_ID, org.apache.lucene.util.Version.LUCENE_7_0_0);
@@ -124,6 +127,8 @@ public class Version implements Comparable<Version> {
                 return V_7_0_0_alpha1;
             case V_6_1_0_ID:
                 return V_6_1_0;
+            case V_6_0_0_beta2_ID:
+                return V_6_0_0_beta2;
             case V_6_0_0_beta1_ID:
                 return V_6_0_0_beta1;
             case V_6_0_0_alpha2_ID: