Make tool container background and sidecar foreground in GCP Batch

Author: ksuderman

pulsar/client/client.py

@@ -1129,13 +1129,13 @@ def _launch_containers(
             extra_volumes = [v.strip() for v in raw.split(",") if v.strip()]
 
         runnable = container_command_to_gcp_runnable("pulsar-container", pulsar_submit_container)
-        runnable.background = True
         if extra_volumes:
             runnable.container.volumes = extra_volumes
         job.task_groups[0].task_spec.runnables.append(runnable)
 
         if tool_container:
             tool_runnable = container_command_to_gcp_runnable("tool-container", tool_container)
+            tool_runnable.background = True
             if extra_volumes:
                 tool_runnable.container.volumes = extra_volumes
             job.task_groups[0].task_spec.runnables.append(tool_runnable)