ci: Streamline logging

Let's have journald forward to the console and disable systemd's
status output which contain ANSI escape sequences that aren't rendered
in logs.

.github/workflows/ci.yml

@@ -146,6 +146,13 @@ jobs:
 
         [Content]
         KernelCommandLine=systemd.default_device_timeout_sec=180
+                          # Status uses ansi escape sequences which are useless in log files.
+                          systemd.show_status=false
+                          # Make sure we get logs via the journal instead.
+                          systemd.journald.forward_to_console
+                          # Disable systemd's and the kernel's ratelimiting on userspace logging to kmsg.
+                          systemd.log_ratelimit_kmsg=0
+                          printk.devkmsg=on
         Environment=SYSTEMD_REPART_MKFS_OPTIONS_EROFS="--quiet"
 
         [Host]

mkosi.extra/usr/lib/systemd/system/mkosi-check-and-shutdown.service

@@ -10,5 +10,3 @@ SuccessActionExitStatus=123
 [Service]
 Type=oneshot
 ExecStart=/usr/lib/systemd/mkosi-check-and-shutdown.sh
-StandardOutput=journal+console
-StandardError=journal+console