testing: Use freeradius instead of the removed radiusd to start FreeRADIUS

testing/tests/ikev2/rw-eap-sim-only-radius/posttest.dat

@@ -1,7 +1,7 @@
 moon::ipsec stop
 carol::ipsec stop
 dave::ipsec stop
-alice::killall radiusd
+alice::killall freeradius
 moon::iptables-restore < /etc/iptables.flush
 carol::iptables-restore < /etc/iptables.flush
 dave::iptables-restore < /etc/iptables.flush

testing/tests/ikev2/rw-eap-sim-only-radius/pretest.dat

@@ -10,7 +10,7 @@ dave::rm /etc/ipsec.d/cacerts/*
 alice::cat /etc/freeradius/triplets.dat
 carol::cat /etc/ipsec.d/triplets.dat
 dave::cat /etc/ipsec.d/triplets.dat
-alice::radiusd
+alice::freeradius
 moon::ipsec start
 carol::ipsec start
 dave::ipsec start