update Lucene version for 6.0-RC2 version

Author: martijnvg

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

@@ -111,7 +111,7 @@ public class Version implements Comparable<Version> {
         new Version(V_6_0_0_rc1_ID, org.apache.lucene.util.Version.LUCENE_7_0_0);
     public static final int V_6_0_0_rc2_ID = 6000052;
     public static final Version V_6_0_0_rc2 =
-        new Version(V_6_0_0_rc2_ID, org.apache.lucene.util.Version.LUCENE_7_0_0);
+        new Version(V_6_0_0_rc2_ID, org.apache.lucene.util.Version.LUCENE_7_0_1);
     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_1_0);
     public static final Version CURRENT = V_6_1_0;