store: Really remove empty /etc/resolv.conf and /etc/hostname

[cgwalters]

The previous change here was a no-op for two reasons:

• It's actually usr/etc at this point
• We were operating on the wrong rootfs

Fixes: 57bd0dc

[cgwalters]

Hmm the LBI test failure there looks like some kind of networking flake between the controller and target. Let's see if the aarch64 runs green, if so I think we can just merge over red since I still don't know how to retry testing farm jobs other than force pushing, which retriggers everything.

And BTW what I really messed up here originally is that stuff under tests/readonly doesn't run unless it starts with test- so we were just silently not running that test before 🙈

[jeckersb]

Hmm the LBI test failure there looks like some kind of networking flake between the controller and target. Let's see if the aarch64 runs green, if so I think we can just merge over red since I still don't know how to retry testing farm jobs other than force pushing, which retriggers everything.

And BTW what I really messed up here originally is that stuff under tests/readonly doesn't run unless it starts with test- so we were just silently not running that test before 🙈

I just retriggered it, you can do it from the github UI

[jeckersb]

lgtm, hopefully the re-run x86_64 integration passes and this merges 🙏