Update the android config file for backup

- The primary android instance is not yet up, so we should backup the secondary one in the meantime

Change-Id: Ia1a854d4854fc22fff731012926928838673a540
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/891112
Reviewed-by: Jeff Yoon <jeffyoon@google.com>
Auto-Submit: Ashwin Verleker <ashwinpv@google.com>
Commit-Queue: Jeff Yoon <jeffyoon@google.com>
diff --git a/perf/backup/backup.sh b/perf/backup/backup.sh
index 43a6505..4806c86 100755
--- a/perf/backup/backup.sh
+++ b/perf/backup/backup.sh
@@ -7,7 +7,7 @@
 
 CONFIGS=(
   'angle.json'
-  'cdb-android-x.json'
+  'cdb-android-x-secondary.json'
   'cdb-ct-prod.json'
   'cdb-nano.json'
   'flutter-engine2.json'