Manifest for Android CTS 6.0 Release 15 (3666707)

Change-Id: I6075513ca6c1b2e8dbb2d07bd21ee8f4abf85f5c
diff --git a/default.xml b/default.xml
index 11d475e..4ac6811 100644
--- a/default.xml
+++ b/default.xml
@@ -2,7 +2,7 @@
 <manifest>
 
   <remote name="aosp" fetch=".." review="https://android-review.googlesource.com/"/>
-  <default revision="refs/tags/android-cts-6.0_r14" remote="aosp" sync-j="4"/>
+  <default revision="refs/tags/android-cts-6.0_r15" remote="aosp" sync-j="4"/>
 
   <project path="build" name="platform/build" groups="pdk">
     <copyfile src="core/root.mk" dest="Makefile"/>