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Cloned BZ#2057497 to explore the feasibility of backporting the fix for that problem to RHEL 9.1.

We had a RHEL for Edge customer hit this problem after doing a SELinux policy modification on RHEL 9.0 and then running into problems after upgrading to RHEL 9.1.

See https://redhat-internal.slack.com/archives/C01UHN61GSD/p1683290313616689
See https://access.redhat.com/support/cases/#/case/03503744

The upstream issue that tracks this (or part of this) is https://github.com/coreos/rpm-ostree/issues/27.

A workaround for this is currently included in Red Hat CoreOS via a systemd unit that runs `semodule -B` early in the boot process:

https://github.com/openshift/os/blob/master/overlay.d/05rhcos/usr/lib/systemd/system/rhcos-selinux-policy-upgrade.service
https://github.com/openshift/os/blob/master/overlay.d/05rhcos/usr/libexec/rhcos-rebuild-selinux-policy

This is fixed since ostreedev/ostree#2569 in ostree v2022.3, which is shipped in 9.1 already.

But note that the fix needs to be in the version we're upgrading *from*.  We could try to ship this back to 9.0.z but it's a nontrivial patch.

This also depends on fixes in libsemanage and policy coreutils that I've verified have landed in 9.0 already:
- https://bugzilla.redhat.com/show_bug.cgi?id=2049191 in 9.0
- https://bugzilla.redhat.com/show_bug.cgi?id=2049193 in 9.0
- https://bugzilla.redhat.com/show_bug.cgi?id=2104935 in 9.1 backported to 9.0 with https://bugzilla.redhat.com/show_bug.cgi?id=2129140

Link for upstream ostree PR: https://github.com/ostreedev/ostree/pull/2569

Given that this is fixed in 9.2 and that 9.1 is no longer supported anymore, we will close this issue as it's unlikely that we'll be able to fix it.