[OE-core] [RFC][PATCH] initrdscripts: mount / as read-only when live-booting

[Ross Burton]

Hi,

I noticed that our live image boot mounts / as read-write straight away, which
seems to be the wrong thing to do as it means init can't do a fsck if required.
>From what I can tell both our sysvinit and systemd boots remount as rw once
they've started so this should be safe, but I've not given this massive amounts
of testing yet.

Consider this a Request For Comments/Testing, mainly as I'm going away for a few
days from tomorrow.

Ross