tests/root-reprovision: Query /sysroot, not /

[cgwalters]

Prep for enabling composefs. This is the same issue as coreos/coreos-installer#1203

[cgwalters]

Ah, CI failure looks like unrelated fallout:

[ 4.073776] ignition[1282]: files: createFilesystemsFiles: createFiles: op(3): Error fetching file "/sysroot/etc/NetworkManager/dispatcher.d/30-timesyncd": resource not found

Ah, I see https://github.com/eworm-de/networkmanager-dispatcher-timesyncd/raw/master/30-timesyncd ceased to exist. Because of eworm-de/networkmanager-dispatcher-timesyncd@bdeed3f presumably but that claims to have been committed years ago. Confusing.

Anyways, here is the peril of having our gating tests depending on random uncontrolled internet resources...

[dustymabe]

Ah, CI failure looks like unrelated fallout:

[ 4.073776] ignition[1282]: files: createFilesystemsFiles: createFiles: op(3): Error fetching file "/sysroot/etc/NetworkManager/dispatcher.d/30-timesyncd": resource not found

Ah, I see https://github.com/eworm-de/networkmanager-dispatcher-timesyncd/raw/master/30-timesyncd ceased to exist. Because of eworm-de/networkmanager-dispatcher-timesyncd@bdeed3f presumably but that claims to have been committed years ago. Confusing.

Anyways, here is the peril of having our gating tests depending on random uncontrolled internet resources...

#2782

[dustymabe]

Prep for enabling composefs

Worth noting that soon we will be switching to OSBuild for image builds, which may have implications here.

[dustymabe]

These changes LGTM