charon-tkm: Don't use starter/stroke with charon-tkm anymore

For the tests, the unused init script that was used before switching to
charon-systemd is repurposed to manage the daemon.

testing/tests/tkm/host2host-responder/hosts/sun/etc/strongswan.conf

@@ -1,5 +1,9 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
-charon {
-  load = aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 curl revocation hmac xcbc stroke kernel-netlink socket-default updown
+swanctl {
+  load = pem pkcs1 gmp x509 revocation random
+}
+
+charon-systemd {
+  load = aes sha1 sha2 pem pkcs1 gmp random nonce x509 curl revocation hmac xcbc vici kernel-netlink socket-default updown
 }