Optionaly redirect logs to stdout ?

Hi,

In a container/kubernetes environment, it's a good practice to log only to stdout / stderr.
The logs are then easily collected and aggregated.

it looks like pg_autoctl is redirecting the postgresql child process output to `startup.log` file and configuring postgresql to log to `log` folder.

Would you be interested in a pull request adding a `pg_autoctl create ...` a flag to configure postgresql to log to stdout and redirecting log stream from pg_autoctll to stdout ?