Add kernel-uek-core.posttrans to list of ignored package scripts

[fredtibbitts]

This PR fixes rpm-ostree on Oracle Linux UEKR7. UEKR7 has a different package layout than UEKR6. In particular, some postinstall scripts that used to run in "kernel-uek" are now run as part of "kernel-uek-core". This causes rpm-ostree to output lots of errors and eventually fails.

The fix is to add "kernel-uek-core" to the ignore list of posttrans scripts.

Sample snippet of output showing the errors before the fix:

rpm-ostree compose tree --unified-core  --repo=./ostree  configs/manifest.yaml
...
⠤ Running posttrans scripts... kernel-uek-core
...
kernel-uek-core.posttrans: cp: setting attributes for '/var/tmp/dracut.HpI4IW/initramfs/shutdown': Operation not supported
kernel-uek-core.posttrans: dracut-install: ERROR: installing '/usr/lib/dracut/modules.d/99shutdown/shutdown.sh' to '/shutdown'
kernel-uek-core.posttrans: dracut: FAILED: /usr/lib/dracut/dracut-install -D /var/tmp/dracut.HpI4IW/initramfs -l /usr/lib/dracut/modules.d/99shutdown/shutdown.sh /shutdown
kernel-uek-core.posttrans: libkmod: kmod_module_get_holders: could not open '/sys/module/vhost_net/holders': No such file or directory
...

[openshift-ci]

Hi @fredtibbitts. Thanks for your PR.

I'm waiting for a coreos member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[cgwalters]

cc #4726 for the more sustainable fix

[fredtibbitts]

@cgwalters this seems to be stuck waiting for an expected check?

[cgwalters]

/ok-to-test