added ikev2/rw-eap-sim-radius scenario

testing/tests/ikev2/rw-eap-sim-radius/hosts/moon/etc/strongswan.conf

@@ -0,0 +1,11 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 gmp random x509 pubkey hmac xcbc stroke kernel-netlink fips-prf eapradius updown
+  plugins {
+    eap_radius {
+      secret = gv6URkSs 
+      server = PH_IP_ALICE
+    }
+  }
+}