[resultdb] add ddoman@ to depot_tools/LUCI_OWNERS

ddoman@ frequently moves the cipd pin of infra/tools/rdb package.

R=iannucci@chromium.org
CC=chanli@chromium.org,nodir@chromium.org,robertocn@chromium.org,tandrii@google.com,vadimsh@chromium.org

Change-Id: I26b3eae79a9b917af6197c5c42db5303a99a2c50
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2358897
Commit-Queue: Scott Lee <ddoman@chromium.org>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Reviewed-by: Nodir Turakulov <nodir@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Reviewed-by: Andrii Shyshkalov <tandrii@google.com>
diff --git a/LUCI_OWNERS b/LUCI_OWNERS
index cd63abf..bcd834c 100644
--- a/LUCI_OWNERS
+++ b/LUCI_OWNERS
@@ -1,3 +1,4 @@
+ddoman@chromium.org
 iannucci@chromium.org
 nodir@chromium.org
 tandrii@chromium.org
diff --git a/OWNERS b/OWNERS
index 1c6b145..7a1f62b 100644
--- a/OWNERS
+++ b/OWNERS
@@ -34,5 +34,6 @@
 per-file led*=file://LUCI_OWNERS
 per-file luci*=file://LUCI_OWNERS
 per-file vpython*=file://LUCI_OWNERS
+per-file LUCI_OWNERS=file://LUCI_OWNERS
 
 # COMPONENT: Infra>SDK