added ipv6/net2net-ip6-in-ip6-ikev2 scenario

testing/tests/ipv6/net2net-ip4-in-ip6-ikev2/hosts/moon/etc/strongswan.conf

@@ -0,0 +1,5 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 gmp random x509 pubkey hmac xcbc stroke
+}