Increment CTS Version to 2.3_r8

Bug 5278025

Change-Id: Ib6b08e528ffd2d568791dfff0ffde3a7fdbd80f4
diff --git a/tools/host/src/com/android/cts/Version.java b/tools/host/src/com/android/cts/Version.java
index b8838c7..243add2 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_r7";
+    private static final String version = "2.3_r8";
 
     private Version() {
         // no instances allowed