Bump CTS 6.0R3 for Security Releases.

Change-Id: I3471cd9b41b9d60711ca7b337c2d194536dbf233
diff --git a/tools/tradefed-host/src/com/android/cts/tradefed/build/CtsBuildProvider.java b/tools/tradefed-host/src/com/android/cts/tradefed/build/CtsBuildProvider.java
index 854fce6..66a4562 100644
--- a/tools/tradefed-host/src/com/android/cts/tradefed/build/CtsBuildProvider.java
+++ b/tools/tradefed-host/src/com/android/cts/tradefed/build/CtsBuildProvider.java
@@ -31,7 +31,7 @@
     @Option(name="cts-install-path", description="the path to the cts installation to use")
     private String mCtsRootDirPath = System.getProperty("CTS_ROOT");
 
-    public static final String CTS_BUILD_VERSION = "6.0_r1.5";
+    public static final String CTS_BUILD_VERSION = "6.0_r3";
     public static final String CTS_PACKAGE = "com.android.cts.tradefed.testtype";
 
     /**