Increment CTS Version to 2.2_r5

Bug 4128048

Change-Id: I7429e8e0b0d18427fc7dcd1629e28131a8a92ca3
diff --git a/tools/host/src/com/android/cts/Version.java b/tools/host/src/com/android/cts/Version.java
index c1b5d39..4fd2529 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 = "2.2_r4";
+    private static final String version = "2.2_r5";
 
     private Version() {
         // no instances allowed