testing: Add expect-connection calls for all tests and hosts

There are some exceptions (e.g. those that use auto=start or p2pnat).

testing/tests/pfkey/protoport-route/pretest.dat

@@ -2,6 +2,8 @@ moon::iptables-restore < /etc/iptables.rules
 carol::iptables-restore < /etc/iptables.rules
 moon::ipsec start
 carol::ipsec start
+moon::expect-connection rw-icmp
+moon::expect-connection rw-ssh
 carol::expect-connection home-icmp
 carol::expect-connection home-ssh
 carol::ssh PH_IP_ALICE hostname