testing: Added route-based/rw-shared-vti scenario

testing/tests/route-based/rw-shared-vti/posttest.dat

@@ -0,0 +1,9 @@
+carol::swanctl --terminate --ike home
+dave::swanctl --terminate --ike home
+moon::systemctl stop strongswan-swanctl
+carol::systemctl stop strongswan-swanctl
+dave::systemctl stop strongswan-swanctl
+moon::iptables-restore < /etc/iptables.flush
+carol::iptables-restore < /etc/iptables.flush
+dave::iptables-restore < /etc/iptables.flush
+moon::ip tunnel del vti0