testing: Migrated pfkey scenarios to new default plugins

testing/tests/pfkey/net2net-route/hosts/moon/etc/strongswan.conf

@@ -1,5 +1,5 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 charon {
-  load = random nonce aes sha1 sha2 pem pkcs1 curve25519 gmp x509 curl revocation hmac kdf stroke kernel-pfkey kernel-netlink socket-default updown
+  load = random nonce openssl pem pkcs1 curl revocation stroke kernel-pfkey kernel-netlink socket-default updown
 }