Add tricium config.

This CL adds a tricium config file for Tint.

Change-Id: I08409df9b6b79bdd3ffecf4f28867674435ae14a
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/34360
Auto-Submit: dan sinclair <dsinclair@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

infra/config/global/tricium-prod.cfg

@@ -0,0 +1,35 @@
+selections {
+  function: "GitFileIsolator"
+  platform: UBUNTU
+}
+
+selections {
+  function: "Pylint"
+  platform: UBUNTU
+}
+
+selections {
+  function: "Spacey"
+  platform: UBUNTU
+}
+
+selections {
+  function: "SpellChecker"
+  platform: UBUNTU
+}
+
+selections {
+  function: "Cpplint"
+  platform: UBUNTU
+}
+
+repos {
+  gerrit_project {
+    host: "dawn-review.googlesource.com"
+    project: "tint"
+    git_url: "https://dawn.googlesource.com/tint"
+  }
+}
+
+service_account: "tricium-prod@appspot.gserviceaccount.com"
+swarming_service_account: "swarming@tricium-prod.iam.gserviceaccount.com"