Increment CTS Version to 2.3_r3

Bug 4375608

Change-Id: I05301aad337acb1766b5589b912386b9aea43246
diff --git a/tools/host/src/com/android/cts/Version.java b/tools/host/src/com/android/cts/Version.java
index fb91d92..7d14552 100644
--- a/tools/host/src/com/android/cts/Version.java
+++ b/tools/host/src/com/android/cts/Version.java
@@ -18,7 +18,7 @@
 
 public class Version {
     // The CTS version string
-    private static final String version = "2.3_r2";
+    private static final String version = "2.3_r3";
 
     private Version() {
         // no instances allowed