added ikev2/rw-eap-ttls-only scenario

testing/tests/ikev2/rw-eap-ttls-only/hosts/dave/etc/strongswan.conf

@@ -0,0 +1,6 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random x509 revocation hmac xcbc stroke kernel-netlink socket-default eap-identity eap-md5 eap-ttls updown
+  multiple_authentication=no
+}