added ikev2/net2net-pubkey scenario

testing/tests/ikev2/net2net-pubkey/pretest.dat

@@ -0,0 +1,8 @@
+moon::/etc/init.d/iptables start 2> /dev/null
+sun::/etc/init.d/iptables start 2> /dev/null
+moon::rm /etc/ipsec.d/cacerts/*
+sun::rm /etc/ipsec.d/cacerts/*
+moon::ipsec start
+sun::ipsec start
+moon::sleep 2
+moon::ipsec up net-net