fetch: Inject headers from /usr/lib/os-release

[cgwalters]

Depends: coreos/ignition#889

So that the openshift/machine-config-operator server can dispatch
on them to aid with Ignition spec 3 transitions.

[cgwalters]

Note that having this actually be useful also depends on dracutdevs/dracut#655

[bgilbert]

So that the openshift/machine-config-operator server can dispatch on them to aid with Ignition spec 3 transitions.

Could you fill in (or provide a reference) why the existing Accept header won't work for this?

[cgwalters]

Could you fill in (or provide a reference) why the existing Accept header won't work for this?

You're right that the existing Accept header is enough for the Ignition transition, I am also trying to add this header to help handle bootimage detection - so we can easily distinguish between e.g. 4.1 and 4.2 bootimages that both Accept: ignition;version=2.0. (In practice since we're not updating those we can't easily distinguish them now, but we can at least distinguish between 4.3 and 4.4)

[darkmuggle]

@cgwalters is this still needed? If so, can you you rebase this over to Ignition itself?

[bgilbert]

Closing this out, since this repository is abandoned. Please reopen against coreos/ignition if still relevant.