mkosi: Configure coredump to store coredumps in the journal.

Makes it easier to debug coredumps that happen in CI as we can retrieve
them via the journal.

diff --git a/mkosi.images/system/mkosi.extra/usr/lib/systemd/coredump.conf b/mkosi.images/system/mkosi.extra/usr/lib/systemd/coredump.conf
new file mode 100644 (file)
index 0000000..cde9785
--- /dev/null
+++ b/mkosi.images/system/mkosi.extra/usr/lib/systemd/coredump.conf
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Coredump]
+Storage=journal