add 7.1.1 and 6.8.1 versions (elastic#42253)

Author: jakelandis

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

@@ -94,10 +94,10 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_6_7_1 = new Version(V_6_7_1_ID, org.apache.lucene.util.Version.LUCENE_7_7_0);
     public static final int V_6_7_2_ID = 6070299;
     public static final Version V_6_7_2 = new Version(V_6_7_2_ID, org.apache.lucene.util.Version.LUCENE_7_7_0);
-    public static final int V_6_7_3_ID = 6070399;
-    public static final Version V_6_7_3 = new Version(V_6_7_3_ID, org.apache.lucene.util.Version.LUCENE_7_7_0);
     public static final int V_6_8_0_ID = 6080099;
     public static final Version V_6_8_0 = new Version(V_6_8_0_ID, org.apache.lucene.util.Version.LUCENE_7_7_0);
+    public static final int V_6_8_1_ID = 6080199;
+    public static final Version V_6_8_1 = new Version(V_6_8_1_ID, org.apache.lucene.util.Version.LUCENE_7_7_0);
     public static final int V_7_0_0_ID = 7000099;
     public static final Version V_7_0_0 = new Version(V_7_0_0_ID, org.apache.lucene.util.Version.LUCENE_8_0_0);
     public static final int V_7_0_1_ID = 7000199;
@@ -106,6 +106,8 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_7_0_2 = new Version(V_7_0_2_ID, org.apache.lucene.util.Version.LUCENE_8_0_0);
     public static final int V_7_1_0_ID = 7010099;
     public static final Version V_7_1_0 = new Version(V_7_1_0_ID, org.apache.lucene.util.Version.LUCENE_8_0_0);
+    public static final int V_7_1_1_ID = 7010199;
+    public static final Version V_7_1_1 = new Version(V_7_1_1_ID, org.apache.lucene.util.Version.LUCENE_8_0_0);
     public static final int V_7_2_0_ID = 7020099;
     public static final Version V_7_2_0 = new Version(V_7_2_0_ID, org.apache.lucene.util.Version.LUCENE_8_0_0);
     public static final int V_8_0_0_ID = 8000099;
@@ -128,6 +130,8 @@ public static Version fromId(int id) {
                 return V_8_0_0;
             case V_7_2_0_ID:
                 return V_7_2_0;
+            case V_7_1_1_ID:
+                return V_7_1_1;
             case V_7_1_0_ID:
                 return V_7_1_0;
             case V_7_0_2_ID:
@@ -136,10 +140,10 @@ public static Version fromId(int id) {
                 return V_7_0_1;
             case V_7_0_0_ID:
                 return V_7_0_0;
+            case V_6_8_1_ID:
+                return V_6_8_1;
             case V_6_8_0_ID:
                 return V_6_8_0;
-            case V_6_7_3_ID:
-                return V_6_7_3;
             case V_6_7_1_ID:
                 return V_6_7_1;
             case V_6_7_2_ID: