The following revision refers to this bug:
  https://chromium.googlesource.com/infra/luci/luci-py.git/+/5eccae7a716048ead353e0e829e2845e00e39756

commit 5eccae7a716048ead353e0e829e2845e00e39756
Author: Nodir Turakulov <nodir@google.com>
Date: Thu Oct 18 19:27:19 2018

[config_service] Add service_access_group

Add a group that has access to all services.
It will be used to grant
https://ci.chromium.org/p/infra-internal/builders/luci.infra-internal.try/infradata-config-presubmit
access to service configs, so that it can validate them.

Bug:  896488 
Change-Id: Ifa6151bb032730cdb47b5c079590d23eb7dffabc
Reviewed-on: https://chromium-review.googlesource.com/c/1287232
Reviewed-by: Vadim Shtayura <vadimsh@chromium.org>
Commit-Queue: Nodir Turakulov <nodir@chromium.org>

[modify] https://crrev.com/5eccae7a716048ead353e0e829e2845e00e39756/appengine/components/components/config/proto/service_config.proto
[modify] https://crrev.com/5eccae7a716048ead353e0e829e2845e00e39756/appengine/components/components/config/proto/service_config_pb2.py
[modify] https://crrev.com/5eccae7a716048ead353e0e829e2845e00e39756/appengine/config_service/acl.py
[modify] https://crrev.com/5eccae7a716048ead353e0e829e2845e00e39756/appengine/config_service/acl_test.py

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/infradata/config/+/05d91c499111ac5b93e7d1c73ffc1e64bba58bfc

commit 05d91c499111ac5b93e7d1c73ffc1e64bba58bfc
Author: Nodir Turakulov <nodir@google.com>
Date: Thu Oct 18 22:31:19 2018

https://logs.chromium.org/logs/infra-internal/buildbucket/cr-buildbucket.appspot.com/8932288068446752240/+/steps/presubmit/0/stdout

Issue 853073 has been merged into this issue.