testing: Converted tnc scenarios to swanctl

testing/tests/tnc/tnccs-20-fail-init/pretest.dat

@@ -4,10 +4,14 @@ dave::iptables-restore < /etc/iptables.rules
 moon::cat /etc/tnc_config
 carol::cat /etc/tnc_config
 dave::cat /etc/tnc_config
-moon::ipsec start
-carol::ipsec start
-dave::ipsec start
+carol::rm /etc/swanctl/rsa/*
+dave::rm /etc/swanctl/rsa/*
+carol::rm /etc/swanctl/x509/*
+dave::rm /etc/swanctl/x509/*
+moon::service charon start
+carol::service charon start
+dave::service charon start
 carol::expect-connection home
-carol::ipsec up home
+carol::swanctl --initiate --child home 2> /dev/null
 dave::expect-connection home
-dave::ipsec up home
+dave::swanctl --initiate --child home 2> /dev/null