machined's main.go waits for boot sequence to finish, while metal
platform initializer tries to send a message to the event bus without
any listeners, so this is pure deadlock.
Resolve that by panicking from initializer, this aborts phase and
sequence, and leads to reboot on panic. Not really clean as it leaves
scary stacktraces in the dmesg, but it works. Cleanup might be done by
introducing error value for reboot, and ignoring it when printing the
errors.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
