added ikev2/inactivity-timeout scenario

testing/tests/ikev2/inactivity-timeout/hosts/moon/etc/strongswan.conf

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