GCP needs bigger ephemeral disk
GCP needs bigger ephemeral disk

fixes:
```
Task 19069 | 16:45:32 | Updating instance concourse: concourse/52e79d85-ae3a-4589-9bb8-1de7d7babdb7 (0) (canary) (00:08:23)
                     L Error: Action Failed get_task: Task 732af0e7-c6bf-41d1-7baf-2791906ad30a result: Preparing apply spec: Preparing package concourse: Installing package directory: Decompressing package files: Shelling out to tar: Running command: 'tar --no-same-owner -xzf /var/vcap/data/tmp/bosh-blobstore-externalBlobstore-Get762476242 -C /var/vcap/data/packages/concourse/65414d8439be61ab763840a28465911197834149', stdout: '', stderr: 'tar: ./bin/containerd: Wrote only 5632 of 10240 bytes
tar: ./bin/init: Cannot write: No space left on device
```

cunnie/deployments,cunnie/deployments