vm/systemd: start misc-post after network

This will ensure that /rw/config/rc.local is called after applying default
iptables rules, so it can safely modify it without the risk to be overridden
later by default ones.

vm-systemd/qubes-misc-post.service

@@ -1,6 +1,6 @@
 [Unit]
 Description=Qubes misc post-boot actions
-After=qubes-dvm.service
+After=qubes-dvm.service network.target
 
 [Service]
 Type=oneshot