Extend timeout for Linux Chromium OS ASan LSan Builder to 4 Hours.

Some builds take more than 3 hours leading to timeout of almost complete
builds. Extend timeout until the builds are faster.

R=bpastene@google.com

Bug: 1030593
Change-Id: I4c85e14abfe1613e1f6908f175cbfaf1b8e91214
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1951091Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Anushruth  <anushruth@chromium.org>
Cr-Commit-Position: refs/heads/master@{#721715}

infra/config/buckets/ci.star

@@ -2124,6 +2124,9 @@ memory_builder(
 
 memory_builder(
     name = 'Linux Chromium OS ASan LSan Builder',
+    # TODO(crbug.com/1030593): Builds take more than 3 hours sometimes. Remove
+    # once the builds are faster.
+    execution_timeout = 4 * time.hour,
     goma_backend = goma.backend.RBE_PROD,
 )
 

infra/config/generated/cr-buildbucket.cfg

@@ -2555,7 +2555,7 @@ buckets: <
         properties_j: "$kitchen:{\"devshell\":true,\"git_auth\":true}"
         properties_j: "mastername:\"chromium.memory\""
       >
-      execution_timeout_secs: 10800
+      execution_timeout_secs: 14400
       build_numbers: YES
       service_account: "chromium-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
     >