feat(taskbroker): Add Migration Flag and Pipeline Stage

gocd/templates/bash/run-migrations.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+eval $(regions-project-env-vars --region="${SENTRY_REGION}")
+/devinfra/scripts/get-cluster-credentials
+
+k8s-spawn-job \
+  --label-selector="${LABEL_SELECTOR}" \
+  --image="us-central1-docker.pkg.dev/sentryio/taskbroker/image:${GO_REVISION_TASKBROKER_REPO}" \
+  --container-name="taskbroker" \
+  --name="taskbroker-migrations" \
+  -- \
+  /opt/taskbroker \
+  --run migrations

gocd/templates/pipelines/taskbroker.libsonnet

@@ -18,6 +18,24 @@ local checks_stage = {
   },
 };
 
+local run_migrations_stage = {
+  'run-migrations': {
+    fetch_materials: true,
+    jobs: {
+      'run-migrations': {
+        timeout: 60,
+        elastic_profile_id: 'taskbroker',
+        environment_variables: {
+          LABEL_SELECTOR: 'service=taskbroker',
+        },
+        tasks: [
+          gocdtasks.script(importstr '../bash/run-migrations.sh'),
+        ],
+      },
+    },
+  },
+};
+
 local deploy_canary_stage(region) =
   if region == 'us' || region == 'de' then
     [
@@ -73,5 +91,7 @@ function(region) {
     },
   },
   lock_behavior: 'unlockWhenFinished',
-  stages: [checks_stage] + deploy_canary_stage(region) + [deployPrimaryStage],
+  stages: [checks_stage, run_migrations_stage]
+          + deploy_canary_stage(region)
+          + [deployPrimaryStage],
 }