Manifest for Android Wear 8.0.0 Release 1

Change-Id: I506b3623637aeb15cdf54296e7b46da9b9b1eec2
diff --git a/default.xml b/default.xml
index be2292b..64eacaf 100644
--- a/default.xml
+++ b/default.xml
@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch=".."
            review="https://android-review.googlesource.com/" />
-  <default revision="master"
+  <default revision="refs/tags/android-wear-8.0.0_r1"
            remote="aosp"
            sync-j="4" />