Remove ssh keys and autogenerate them on service startup if needed

Slax/debian/cleanup

@@ -5,6 +5,7 @@ rm -f /etc/mtab
 rm -f /etc/apt/sources.list~
 rm -Rf /etc/systemd/system/timers.target.wants
 rm -f /etc/systemd/system/multi-user.target.wants/ssh.service
+rm -f /etc/ssh/ssh_host*
 
 rm -f /var/backups/*
 rm -f /var/cache/ldconfig/*