testing: Load kdf plugin in all scenarios that require it

Once we use plugin-provided prf+() these won't work otherwise.

testing/tests/ikev2/net2net-pkcs12/hosts/moon/etc/strongswan.conf

@@ -1,9 +1,9 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 swanctl {
-  load = random aes sha1 sha2 hmac pem pkcs1 pkcs7 pkcs8 pkcs12 gmp x509 revocation constraints
+  load = random aes sha1 sha2 hmac kdf pem pkcs1 pkcs7 pkcs8 pkcs12 gmp x509 revocation constraints
 }
 
 charon-systemd {
-  load = random nonce aes sha1 sha2 hmac pem pkcs1 gmp x509 revocation curve25519 curl kernel-netlink socket-default updown vici
+  load = random nonce aes sha1 sha2 hmac kdf pem pkcs1 gmp x509 revocation curve25519 curl kernel-netlink socket-default updown vici
 }

testing/tests/ikev2/net2net-pkcs12/hosts/sun/etc/strongswan.conf

@@ -1,9 +1,9 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 swanctl {
-  load = random aes sha1 sha2 hmac pem pkcs1 pkcs7 pkcs8 pkcs12 gmp x509 revocation constraints
+  load = random aes sha1 sha2 hmac kdf pem pkcs1 pkcs7 pkcs8 pkcs12 gmp x509 revocation constraints
 }
 
 charon-systemd {
-  load = random nonce aes sha1 sha2 hmac pem pkcs1 gmp x509 revocation curve25519 curl kernel-netlink socket-default updown vici
+  load = random nonce aes sha1 sha2 hmac kdf pem pkcs1 gmp x509 revocation curve25519 curl kernel-netlink socket-default updown vici
 }