testing: Print triplets.dat files of clients in EAP-SIM scenarios

References #1078.

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

@@ -1,6 +1,7 @@
 moon::iptables-restore < /etc/iptables.rules
 carol::iptables-restore < /etc/iptables.rules
 alice::cat /etc/freeradius/triplets.dat
+carol::cat /etc/ipsec.d/triplets.dat
 alice::radiusd
 moon::ipsec start
 carol::ipsec start