This changes connectd to use `status_fail()` on TOR problems during statup
instead of `err()`. Using `err()` did not write to the logfile.
To find out TOR problems during startup, the user needed to stop the system
daemon and call `lightningd` manually in console to see the error.
`status_fail()` logs and exits, but also prints a whole stacktrace,
which is a bit too much imho on config errors. But currently there is
no `status_SOMETHING` method that logs, prints and exists on an error
without stacktrace.
Changelog-None
9a3f69aecf