setup password for internal database config

## We need to set postgresql database password, and fix postgres network connectivity

- appliance_console: internal database prompts for password.
- CentOS kickstarter: pass password into appliance_console_cli
- appliance_console_cli: relay username/password/databasename
- postgres: prompt passwords on all network connections (ident not installed)

https://bugzilla.redhat.com/show_bug.cgi?id=1128291

Sorry. misread.

`appliance_console_cli` does not call into `ask_questions`, so this code is not seen in centos. It is called from `appliance_console` (no `cli`)