Add 6.5.5 version constants

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

@@ -116,6 +116,8 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_6_5_3 = new Version(V_6_5_3_ID, org.apache.lucene.util.Version.LUCENE_7_5_0);
     public static final int V_6_5_4_ID = 6050499;
     public static final Version V_6_5_4 = new Version(V_6_5_4_ID, org.apache.lucene.util.Version.LUCENE_7_5_0);
+    public static final int V_6_5_5_ID = 6050599;
+    public static final Version V_6_5_5 = new Version(V_6_5_5_ID, org.apache.lucene.util.Version.LUCENE_7_5_0);
     public static final int V_6_6_0_ID = 6060099;
     public static final Version V_6_6_0 = new Version(V_6_6_0_ID, org.apache.lucene.util.Version.LUCENE_7_6_0);
     public static final int V_6_7_0_ID = 6070099;
@@ -142,6 +144,8 @@ public class Version implements Comparable<Version>, ToXContentFragment {
                 return V_6_7_0;
             case V_6_6_0_ID:
                 return V_6_6_0;
+            case V_6_5_5_ID:
+                return V_6_5_5;
             case V_6_5_4_ID:
                 return V_6_5_4;
             case V_6_5_3_ID: