added rw-psk-ikev2 scenario

testing/tests/ipv6/rw-psk-ikev2/posttest.dat

@@ -0,0 +1,9 @@
+moon::ipsec stop
+carol::ipsec stop
+dave::ipsec stop
+moon::/etc/init.d/iptables stop 2> /dev/null
+carol::/etc/init.d/iptables stop 2> /dev/null
+dave::/etc/init.d/iptables stop 2> /dev/null
+alice::"ip route del fec0:\:/16 via fec1:\:1"
+carol::"ip route del fec1:\:/16 via fec0:\:1"
+dave::"ip route del fec1:\:/16 via fec0:\:1"