Add versions 5.6.12 and 6.4.1

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

@@ -122,6 +122,8 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_5_6_10 = new Version(V_5_6_10_ID, org.apache.lucene.util.Version.LUCENE_6_6_1);
     public static final int V_5_6_11_ID = 5061199;
     public static final Version V_5_6_11 = new Version(V_5_6_11_ID, org.apache.lucene.util.Version.LUCENE_6_6_1);
+    public static final int V_5_6_12_ID = 5061299;
+    public static final Version V_5_6_12 = new Version(V_5_6_12_ID, org.apache.lucene.util.Version.LUCENE_6_6_1);
     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);
@@ -174,10 +176,10 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_6_3_1 = new Version(V_6_3_1_ID, org.apache.lucene.util.Version.LUCENE_7_3_1);
     public static final int V_6_3_2_ID = 6030299;
     public static final Version V_6_3_2 = new Version(V_6_3_2_ID, org.apache.lucene.util.Version.LUCENE_7_3_1);
-    public static final int V_6_3_3_ID = 6030399;
-    public static final Version V_6_3_3 = new Version(V_6_3_3_ID, org.apache.lucene.util.Version.LUCENE_7_3_1);
     public static final int V_6_4_0_ID = 6040099;
     public static final Version V_6_4_0 = new Version(V_6_4_0_ID, org.apache.lucene.util.Version.LUCENE_7_4_0);
+    public static final int V_6_4_1_ID = 6040199;
+    public static final Version V_6_4_1 = new Version(V_6_4_1_ID, org.apache.lucene.util.Version.LUCENE_7_4_0);
     public static final int V_6_5_0_ID = 6050099;
     public static final Version V_6_5_0 = new Version(V_6_5_0_ID, org.apache.lucene.util.Version.LUCENE_7_5_0);
     public static final int V_7_0_0_alpha1_ID = 7000001;
@@ -200,10 +202,10 @@ public class Version implements Comparable<Version>, ToXContentFragment {
                 return V_7_0_0_alpha1;
             case V_6_5_0_ID:
                 return V_6_5_0;
+            case V_6_4_1_ID:
+                return V_6_4_1;
             case V_6_4_0_ID:
                 return V_6_4_0;
-            case V_6_3_3_ID:
-                return V_6_3_3;
             case V_6_3_2_ID:
                 return V_6_3_2;
             case V_6_3_1_ID:
@@ -246,6 +248,8 @@ public class Version implements Comparable<Version>, ToXContentFragment {
                 return V_6_0_0_alpha2;
             case V_6_0_0_alpha1_ID:
                 return V_6_0_0_alpha1;
+            case V_5_6_12_ID:
+                return V_5_6_12;
             case V_5_6_11_ID:
                 return V_5_6_11;
             case V_5_6_10_ID: