testing: Optimized plugin use in pkcs8 scenarios

testing/tests/openssl-ikev2/ecdsa-pkcs8/hosts/carol/etc/strongswan.conf

@@ -1,5 +1,9 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
-charon {
-  load = random nonce pem pkcs1 openssl curl revocation vici kernel-netlink socket-default updown
+swanctl {
+  load = pem openssl
+}
+
+charon-systemd {
+  load = nonce pem openssl curl revocation vici kernel-netlink socket-default updown
 }

testing/tests/openssl-ikev2/ecdsa-pkcs8/hosts/dave/etc/strongswan.conf

@@ -1,5 +1,9 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
-charon {
-  load = random nonce pem pkcs1 openssl curl revocation vici kernel-netlink socket-default updown
+swanctl {
+  load = pem openssl
+}
+
+charon-systemd {
+  load = nonce pem openssl curl revocation vici kernel-netlink socket-default updown
 }

testing/tests/openssl-ikev2/ecdsa-pkcs8/hosts/moon/etc/strongswan.conf

@@ -1,5 +1,9 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
-charon {
-  load = random nonce pem pkcs1 openssl curl revocation vici kernel-netlink socket-default updown
+swanctl {
+  load = pem openssl
+}
+
+charon-systemd {
+  load = nonce pem openssl curl revocation vici kernel-netlink socket-default updown
 }