testing: Change sql scenarios to swanctl

testing/tests/sql/ip-split-pools-db/posttest.dat

@@ -1,3 +1,5 @@
-carol::ipsec stop
-dave::ipsec stop
-moon::ipsec stop
+carol::swanctl --terminate --ike home
+dave::swanctl --terminate --ike home
+carol::service charon stop 2> /dev/null
+dave::service charon stop 2> /dev/null
+moon::service charon stop 2> /dev/null