Fix demo by removing certs first

demo/clean.sh

@@ -4,3 +4,5 @@ for b in $(sudo ip l | grep -Po 'NETNS\w\w[\d\-a-f]+'); do sudo ip l del $b; don
 pkill screen
 killall python
 killall python3
+find . -name '*.db' -delete
+find . -name '*.crt' -delete