do not require shutdown.target and final.target
After switch-root isolate to the default target. This will load the
default target in the real root after systemd deserializes.
[Unit]
Description=Switch Root
DefaultDependencies=no
-Requires=shutdown.target final.target
-After=shutdown.target final.target
[Service]
Type=oneshot
EnvironmentFile=/etc/switch-root.conf
ExecStart=/usr/bin/systemctl --force switch-root ${NEWROOT} ${NEWINIT}
+ExecStopPost=-/usr/bin/systemctl isolate default.target