automount.service: Shut down before network

On shutdown, automount tries to unmount all remaining mount points. This
might include remote mountpoints. Order after network.target, so that
automount gets stopped before network.target. See [1].

[1]: https://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/

misc_systemd_units/automount.service

@@ -3,6 +3,7 @@ DefaultDependencies=no
 Requires=sysinit.target
 After=sysinit.target
 Before=basic.target
+After=network.target
 
 [Service]
 Type=forking