tier-1: Enable persistent journal by default

The copies of this never stop!

tier-1/manifest.yaml

@@ -7,6 +7,7 @@ include:
   - system-configuration.yaml
   - user-experience.yaml
   - fwupd.yaml
+  - persistent-journal.yaml
 
 packages:
   # Include and set the default editor

tier-1/persistent-journal.yaml

@@ -0,0 +1,13 @@
+# 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-sagano-persistent.conf << EOF
+    [Journal]
+    Storage=persistent
+    EOF