testing: Load kdf plugin in all scenarios that require it

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

testing/tests/ike/rw-cert/hosts/carol/etc/strongswan.conf

@@ -1,5 +1,5 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 charon {
-  load = random nonce aes sha1 sha2 md5 pem pkcs1 curve25519 gmp x509 curl revocation hmac stroke kernel-netlink socket-default
+  load = random nonce aes sha1 sha2 md5 pem pkcs1 curve25519 gmp x509 curl revocation hmac kdf stroke kernel-netlink socket-default
 }

testing/tests/ike/rw-cert/hosts/dave/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 stroke kernel-netlink socket-default
+  load = random nonce aes sha1 sha2 pem pkcs1 curve25519 gmp x509 curl revocation hmac kdf stroke kernel-netlink socket-default
 }

testing/tests/ike/rw-cert/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 stroke kernel-netlink socket-default
+  load = random nonce aes sha1 sha2 pem pkcs1 curve25519 gmp x509 curl revocation hmac kdf stroke kernel-netlink socket-default
 }

testing/tests/ike/rw_v1-net_v2/hosts/carol/etc/strongswan.conf

@@ -1,5 +1,5 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 charon {
-  load = random nonce aes sha1 sha2 md5 pem pkcs1 curve25519 gmp hmac x509 curl revocation stroke kernel-netlink socket-default
+  load = random nonce aes sha1 sha2 md5 pem pkcs1 curve25519 gmp hmac kdf x509 curl revocation stroke kernel-netlink socket-default
 }

testing/tests/ike/rw_v1-net_v2/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 hmac x509 curl revocation stroke kernel-netlink socket-default
+  load = random nonce aes sha1 sha2 pem pkcs1 curve25519 gmp hmac kdf x509 curl revocation stroke kernel-netlink socket-default
 }

testing/tests/ike/rw_v1-net_v2/hosts/sun/etc/strongswan.conf

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