testing: Add rw-eap-id-switch scenario

testing/tests/ikev2/rw-eap-id-switch/pretest.dat

@@ -0,0 +1,12 @@
+moon::iptables-restore < /etc/iptables.rules
+carol::iptables-restore < /etc/iptables.rules
+dave::iptables-restore < /etc/iptables.rules
+carol::cd /etc/swanctl; rm rsa/* x509/*
+moon::systemctl start strongswan
+carol::systemctl start strongswan
+dave::systemctl start strongswan
+moon::expect-connection rw-eap-md5
+carol::expect-connection home
+carol::swanctl --initiate --child home 2> /dev/null
+dave::expect-connection home
+dave::swanctl --initiate --child home 2> /dev/null