Manifest for Android 8.1.0 Release 7 (OPM3.171019.013)

Change-Id: I2db21898bff762b57a7cb20ca17c6ef0f569aaea
diff --git a/default.xml b/default.xml
index 4fb93b3..09b93e3 100644
--- a/default.xml
+++ b/default.xml
@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch=".."
            review="https://android-review.googlesource.com/" />
-  <default revision="refs/tags/android-8.1.0_r6"
+  <default revision="refs/tags/android-8.1.0_r7"
            remote="aosp"
            sync-j="4" />