add 'linux-rel-swarming' builder using chromium-swarm-staging

This adds copy of
https://luci-milo-dev.appspot.com/p/chromium/builders/ci/linux-rel-swarming
but use chromium-swarm-staging.appspot.com.

I don't have confidence whether this builder runs correctly at first,
but let me try to see what happens.

Bug: b/144318226
Change-Id: I3fba44f82619e6303fa2685063658eafbcbdf3b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1989300
Auto-Submit: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Yoshisato Yanagisawa <yyanagisawa@google.com>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Cr-Commit-Position: refs/heads/master@{#745826}

infra/config/buckets/ci.star

@@ -1084,6 +1084,11 @@ ci.fyi_builder(
     triggered_by = ['win-pixel-builder-rel'],
 )
 
+ci.fyi_builder(
+    name = 'linux-rel-swarming',
+    executable = 'recipe:swarming/staging',
+    swarming_host = 'chromium-swarm-staging.appspot.com',
+)
 
 ci.fyi_celab_builder(
     name = 'win-celab-builder-rel',

infra/config/consoles/chromium.fyi.star

@@ -230,6 +230,11 @@ luci.console_view(
             category = 'network|traffic|annotations',
             short_name = 'lnx',
         ),
+        luci.console_view_entry(
+            builder = 'ci/linux-rel-swarming',
+            category = 'swarming|staging',
+            short_name = 'lnx',
+        ),
         luci.console_view_entry(
             builder = 'ci/win-annotator-rel',
             category = 'network|traffic|annotations',

infra/config/generated/cr-buildbucket.cfg

@@ -7353,6 +7353,27 @@ buckets: <
       build_numbers: YES
       service_account: "chromium-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
     >
+    builders: <
+      name: "linux-rel-swarming"
+      swarming_host: "chromium-swarm-staging.appspot.com"
+      swarming_tags: "vpython:native-python-wrapper"
+      dimensions: "builderless:1"
+      dimensions: "cores:8"
+      dimensions: "cpu:x86-64"
+      dimensions: "os:Ubuntu-16.04"
+      dimensions: "ssd:0"
+      recipe: <
+        name: "swarming/staging"
+        cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
+        cipd_version: "refs/heads/master"
+        properties_j: "$build/goma:{\"enable_ats\":true,\"rpc_extra_params\":\"?prod\",\"server_host\":\"goma.chromium.org\"}"
+        properties_j: "$kitchen:{\"devshell\":true,\"git_auth\":true}"
+        properties_j: "mastername:\"chromium.fyi\""
+      >
+      execution_timeout_secs: 36000
+      build_numbers: YES
+      service_account: "chromium-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
+    >
     builders: <
       name: "linux-swangle-tot-angle-x64"
       swarming_host: "chromium-swarm.appspot.com"

infra/config/generated/luci-milo.cfg

@@ -3275,6 +3275,11 @@ consoles: <
     category: "network|traffic|annotations"
     short_name: "lnx"
   >
+  builders: <
+    name: "buildbucket/luci.chromium.ci/linux-rel-swarming"
+    category: "swarming|staging"
+    short_name: "lnx"
+  >
   builders: <
     name: "buildbucket/luci.chromium.ci/win-annotator-rel"
     category: "network|traffic|annotations"

infra/config/generated/luci-scheduler.cfg

@@ -5572,6 +5572,15 @@ job: <
     builder: "linux-gcc-rel"
   >
 >
+job: <
+  id: "linux-rel-swarming"
+  acl_sets: "ci"
+  buildbucket: <
+    server: "cr-buildbucket.appspot.com"
+    bucket: "luci.chromium.ci"
+    builder: "linux-rel-swarming"
+  >
+>
 job: <
   id: "linux-swangle-tot-angle-x64"
   acl_sets: "ci"
@@ -6495,6 +6504,7 @@ trigger: <
   triggers: "linux-fieldtrial-rel"
   triggers: "linux-gcc-rel"
   triggers: "ci-linux-ozone-rel"
+  triggers: "linux-rel-swarming"
   triggers: "linux-swangle-tot-angle-x64"
   triggers: "linux-swangle-tot-angle-x86"
   triggers: "linux-swangle-tot-swiftshader-x64"

infra/config/recipes.star

@@ -105,6 +105,10 @@ build_recipe(
     name = 'recipe:swarming/deterministic_build',
 )
 
+build_recipe(
+    name = 'recipe:swarming/staging',
+)
+
 build_recipe(
     name = 'recipe:tricium_clang_tidy_wrapper',
 )