Sometimes swarming bots fail to create the minfs /data partition which we use to supply SSH server credentials to the VM. Could be due to a bug in the minfs creation tools, or we need to wait for a flush...?

https://chromium-swarm.appspot.com/task?id=3cd9071748e45410&refresh=10&show_raw=1

Traceback (most recent call last):
  File "/mnt/data/b/s/w/ir/build/fuchsia/runner_v2/test_runner.py", line 118, in <module>
    sys.exit(main())
  File "/mnt/data/b/s/w/ir/build/fuchsia/runner_v2/test_runner.py", line 93, in main
    target.Start()
  File "/mnt/data/b/s/w/ir/build/fuchsia/runner_v2/qemu_target.py", line 83, in Start
    False)),
  File "/mnt/data/b/s/w/ir/build/fuchsia/runner_v2/boot_data.py", line 128, in ConfigureDataFVM
    os.remove(data_file)
OSError: [Errno 2] No such file or directory: '/mnt/data/b/s/w/ir/out/repro_arm/data.minfs.bin'