testing: Add ipv6/rw-compress-ikev2 scenario

testing/tests/ipv6/rw-compress-ikev2/hosts/moon/etc/strongswan.conf

@@ -0,0 +1,5 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
+}