Run the dawn/roll_cts recipe on the cts-roller bot

Also, set the execution timeout to 9 hours and make it run only
once nightly.

Bug: dawn:1940
Change-Id: I8483f11d359fa174e701b95d590300c75f9f4052
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/148180
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Auto-Submit: Austin Eng <enga@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
diff --git a/infra/config/global/generated/cr-buildbucket.cfg b/infra/config/global/generated/cr-buildbucket.cfg
index 6994bb4..c1bfa2e 100644
--- a/infra/config/global/generated/cr-buildbucket.cfg
+++ b/infra/config/global/generated/cr-buildbucket.cfg
@@ -35,12 +35,13 @@
       dimensions: "os:Ubuntu-18.04"
       dimensions: "pool:luci.flex.ci"
       recipe {
-        name: "dawn"
+        name: "dawn/roll_cts"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "repo_name:\"dawn\""
         properties_j: "runhooks:true"
       }
+      execution_timeout_secs: 32400
       caches {
         name: "gocache"
         path: "gocache"
diff --git a/infra/config/global/generated/luci-scheduler.cfg b/infra/config/global/generated/luci-scheduler.cfg
index ddc3e93..6aa7d07 100644
--- a/infra/config/global/generated/luci-scheduler.cfg
+++ b/infra/config/global/generated/luci-scheduler.cfg
@@ -18,7 +18,7 @@
 job {
   id: "cts-roller"
   realm: "ci"
-  schedule: "0 5,9 * * *"
+  schedule: "0 5 * * *"
   acl_sets: "ci"
   buildbucket {
     server: "cr-buildbucket.appspot.com"
diff --git a/infra/config/global/main.star b/infra/config/global/main.star
index 6f4c1e4..cf21396 100755
--- a/infra/config/global/main.star
+++ b/infra/config/global/main.star
@@ -465,13 +465,14 @@
 luci.builder(
     name = "cts-roller",
     bucket = "ci",
-    # Run at 5 UTC and 9 UTC - which is 10pm PST and 5am EST
-    schedule = "0 5,9 * * *",
+    # Run at 5 UTC - which is 10pm PST
+    schedule = "0 5 * * *",
     executable = luci.recipe(
-        name = "dawn", # TODO(dawn:1940): Replace with CTS roller recipe when ready.
+        name = "dawn/roll_cts",
         cipd_package = "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build",
         cipd_version = "refs/heads/main",
     ),
+    execution_timeout = 9 * time.hour,
     dimensions = {
         "cpu": "x86-64",
         "os": os.LINUX.dimension,