added ikev2/rw-pkcs8 scenario

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

@@ -0,0 +1,5 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 pkcs8 gmp random x509 revocation hmac xcbc ctr ccm gcm stroke kernel-netlink socket-default updown
+}