Restrict access to branch release-R117 to LTS Refresher group.

BUG=b/529917915

Change-Id: I4058d4418cb158ef9e8eef6f50ec040f4370ccd0
Reviewed-on: https://cos-review.googlesource.com/c/All-Projects/+/166244
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Tested-by: Derek Taylor <ddtaylor@google.com>
2 files changed