initial-config: Allow hashed passwords to be specified in config
Initial version of initial-config addressed only unsecure but simple configuration. It would be better to allows users to use hashed password even when generating of it is more complicated. It would be an option for advanced users having to do configuration without ethernet as well.
The following discussion from !560 (merged) should be addressed:
Is it intended to let users generate a config that would be left on some USB flash drive with cleartext (non-hashed) passwords?
I know we can't get rid of Wi-Fi password in clear text but foris and system password can be prepared in their hashed form.
This README can include steps to generate desired hash.