file already closed error for cli reading logs from go test

[bharathkkb]

An error like lvl=eror msg="error reading output: read |0: file already closed" was reported which seems to be from https://github.com/GoogleCloudPlatform/cloud-foundation-toolkit/blob/93e84cf114487d243b2fde0a2a591ca71f5e848b/cli/bptest/run.go#L90

I think in some edge case of cmd termination there could be a synchronization issue between the logging go routine and waiting for the cmd.

[github-actions[bot]]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days