+++ This bug was initially created as a clone of Bug #1764703 +++

Ship a newer ostree in 4.2.z to enable s390x.

So far, we haven't really had a formal process for shipping host updates on z streams.  Basically we don't do any new builds for "CoreOS parts" (ignition, ostree) and just take base RHEL updates which is mostly security.

Let's use this bug to track signoff for shipping a new ostree in 4.2.z to enable s390x.

A lot of patches went in; it'd be possible to backport but in practice ostree has only merged quite safe changes, we have CI etc.  I think it's better from a testing standpoint to ship a new upstream release.

--- Additional comment from Micah Abbott on 2019-10-23 18:27:35 UTC ---

https://jira.coreos.com/browse/GRPA-1148

--- Additional comment from Eric Paris on 2019-10-24 18:52:15 UTC ---

This bug sets Target Release equal to a z-stream but has no bug in the 'Depends On' field. As such this is not a valid bug state and the target release is being unset.

Any bug targeting 4.1.z must have a bug targeting 4.2 in 'Depends On.'
Similarly, any bug targeting 4.2.z must have a bug with Target Release of 4.3 in 'Depends On.'