Move persistent-journal into base

This is something we want people to have by default.

Signed-off-by: Colin Walters <walters@verbum.org>

tier-1/persistent-journal.yaml

@@ -1,13 +0,0 @@
-# Taken from https://github.com/coreos/fedora-coreos-config/blob/aa4373201f415baff85701f7f96ab0583931af6c/overlay.d/05core/usr/lib/systemd/journald.conf.d/10-coreos-persistent.conf#L5
-# Hardcode persistent journal by default. journald has this "auto" behaviour
-# that only makes logs persistent if `/var/log/journal` exists, which it won't
-# on first boot because `/var` isn't fully populated. We should be able to get
-# rid of this once we move to sysusers and create the dir in the initrd.
-
-postprocess:
-  - | #!/bin/bash
-    mkdir -p /usr/lib/systemd/journald.conf.d/
-    cat >/usr/lib/systemd/journald.conf.d/10-centos-bootc-persistent.conf << EOF
-    [Journal]
-    Storage=persistent
-    EOF