Allow Tricium to trigger LUCI buildbuckets

Bug: 1018380
Change-Id: I8dbfc8b1d181c39935e3d877675d3fd696c80af1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1888514Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Tina Lu <ltina@google.com>
Cr-Commit-Position: refs/heads/master@{#710588}

infra/config/buckets/try.star

@@ -9,7 +9,10 @@ luci.bucket(
         ),
         acl.entry(
             roles = acl.BUILDBUCKET_TRIGGERER,
-            users = 'findit-for-me@appspot.gserviceaccount.com',
+            users = [
+                'findit-for-me@appspot.gserviceaccount.com',
+                'tricium-prod@appspot.gserviceaccount.com',
+            ],
             groups = [
                 'project-chromium-tryjob-access',
                 # Allow Pinpoint to trigger builds for bisection

infra/config/generated/cr-buildbucket.cfg

@@ -9704,6 +9704,10 @@ buckets: <
     role: SCHEDULER
     identity: "user:findit-for-me@appspot.gserviceaccount.com"
   >
+  acls: <
+    role: SCHEDULER
+    identity: "user:tricium-prod@appspot.gserviceaccount.com"
+  >
   acls: <
     role: SCHEDULER
     group: "project-chromium-tryjob-access"