Move to vppcfg based configs - generate the initial config in vpp.service. Needs 20260406-2

build/bird/hvn0.lab.ipng.ch/vpp0-3/lib/systemd/system/vpp.service

@@ -0,0 +1,19 @@
+[Unit]
+Description=vector packet processing engine
+After=network.target
+
+[Service]
+Type=simple
+ExecStartPre=-/sbin/modprobe uio_pci_generic
+ExecStartPre=-/usr/local/bin/vppcfg plan --novpp -c /etc/vpp/vppcfg.yaml -o /etc/vpp/config/vppcfg.vpp
+ExecStart=/usr/bin/vpp -c /etc/vpp/startup.conf
+ExecStopPost=/bin/rm -f /dev/shm/db /dev/shm/global_vm /dev/shm/vpe-api
+Restart=always
+# Uncomment the following line to enable VPP coredumps on crash
+# You still need to configure the rest of the system to collect them, see
+# https://fdio-vpp.readthedocs.io/en/latest/troubleshooting/reportingissues/reportingissues.html#core-files
+# for details
+#LimitCORE=infinity
+
+[Install]
+WantedBy=multi-user.target