Add a sleep to the bhyve management script to hopefully avoid bad states.

ansible/roles/bhyve/files/bhyve_netgraph_bridge.bash

@@ -46,7 +46,7 @@ function cleanup {
 }
 vms=()
 for sig in EXIT INT QUIT HUP TERM; do
-  trap "set +e; cleanup" "$sig"
+  trap "set +e; sleep 10; cleanup" "$sig"
 done
 
 function die {