syz-cluster: fix migrate.job.yaml for local deployments

Use env from the global k8s configmap instead of requiring the user to
pass the parameters explicitly.

Set the missing labels that denied access from db-mgmt ot the Spanner
emulator.

Author: a-nogikh

syz-cluster/Makefile

@@ -97,7 +97,7 @@ k8s-config-dev:
 k8s-config-gke: ensure-spanner-database-uri-env ensure-blob-storage-env ensure-workflow-artifacts-bucket
 	@kubectl kustomize ./overlays/gke/ | sed $(SED_EXPRESSIONS)
 
-migrate-job.yaml: ensure-spanner-database-uri-env
+migrate-job.yaml:
 	@cat db-mgmt/migrate-job.yaml | sed $(SED_EXPRESSIONS)
 
 fetch-kernels-once.yaml:

syz-cluster/db-mgmt/migrate-job.yaml

@@ -9,13 +9,17 @@ spec:
   ttlSecondsAfterFinished: 86400
   backoffLimit: 0
   template:
+    metadata:
+      labels:
+        app: db-mgmt
     spec:
       serviceAccountName: gke-db-admin-ksa
       containers:
       - name: migrate
         image: ${IMAGE_PREFIX}db-mgmt:${IMAGE_TAG}
-        env:
-        - name: SPANNER_DATABASE_URI
-          value: "${SPANNER_DATABASE_URI}"
+        imagePullPolicy: IfNotPresent
+        envFrom:
+          - configMapRef:
+              name: global-config-env
         args: ["migrate"]
       restartPolicy: Never