Add unreleased v6.1.2 version

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

@@ -140,6 +140,8 @@ public class Version implements Comparable<Version> {
     public static final Version V_6_1_0 = new Version(V_6_1_0_ID, org.apache.lucene.util.Version.LUCENE_7_1_0);
     public static final int V_6_1_1_ID = 6010199;
     public static final Version V_6_1_1 = new Version(V_6_1_1_ID, org.apache.lucene.util.Version.LUCENE_7_1_0);
+    public static final int V_6_1_2_ID = 6010299;
+    public static final Version V_6_1_2 = new Version(V_6_1_2_ID, org.apache.lucene.util.Version.LUCENE_7_1_0);
     public static final int V_6_2_0_ID = 6020099;
     public static final Version V_6_2_0 = new Version(V_6_2_0_ID, org.apache.lucene.util.Version.LUCENE_7_2_0);
     public static final int V_7_0_0_alpha1_ID = 7000001;
@@ -162,6 +164,8 @@ public class Version implements Comparable<Version> {
                 return V_7_0_0_alpha1;
             case V_6_2_0_ID:
                 return V_6_2_0;
+            case V_6_1_2_ID:
+                return V_6_1_2;
             case V_6_1_1_ID:
                 return V_6_1_1;
             case V_6_1_0_ID: