Using interactive shells to inspect training jobs is generally available (GA)

## Feature Using [interactive shells](https://cloud.google.com/ai-platform/training/docs/monitor-debug-interactive-shell) to inspect training jobs is generally available ([GA](https://cloud.google.com/products#product-launch-stages)). You can use these interactive shells with [VPC Service Controls](https://cloud.google.com/ai-platform/training/docs/vpc-service-controls).